WEBVTT 00:00:00.000 --> 00:00:03.040 Welcome back to the Deep Dive. Today we are taking 00:00:03.040 --> 00:00:06.719 on a true titan of thought, a figure whose intellectual 00:00:06.719 --> 00:00:11.679 output didn't just shape philosophy, it fundamentally 00:00:11.679 --> 00:00:14.339 restructured how we understand knowledge, morality, 00:00:14.919 --> 00:00:16.940 And even freedom. That's right. We are diving 00:00:16.940 --> 00:00:19.920 deep into the massive philosophical system of 00:00:19.920 --> 00:00:22.019 Immanuel Kant. And massive is the right word. 00:00:22.059 --> 00:00:24.579 It is arguably the most ambitious system ever 00:00:24.579 --> 00:00:27.539 constructed by a single individual. When we talk 00:00:27.539 --> 00:00:29.879 about Kant, we're really dealing with the architect 00:00:29.879 --> 00:00:32.560 of modern reason. So what's our mission for today? 00:00:33.020 --> 00:00:35.179 This is a huge topic. It is. So our mission is 00:00:35.179 --> 00:00:37.200 pretty comprehensive. We want to extract the 00:00:37.200 --> 00:00:38.820 essential concepts, you know, the Copernican 00:00:38.820 --> 00:00:41.600 turn, the categorical imperative, and also confront 00:00:41.600 --> 00:00:44.179 some of the challenging paradoxes, including 00:00:44.179 --> 00:00:47.000 his views on human nature and race. All to understand 00:00:47.000 --> 00:00:49.119 why he's still considered one of the most vital 00:00:49.119 --> 00:00:51.380 thinkers of the Enlightenment. Exactly. And you've 00:00:51.380 --> 00:00:54.119 provided a deep stack of sources here covering 00:00:54.119 --> 00:00:56.740 his core critiques, his political hopes for, 00:00:56.759 --> 00:00:59.939 well, for perpetual peace, and the very complex 00:00:59.939 --> 00:01:02.920 reality of his legacy. OK, let's unpack this 00:01:02.920 --> 00:01:04.599 monumental figure. We should start with the man 00:01:04.599 --> 00:01:08.140 himself, Immanuel Kant, born Immanuel in 1724 00:01:08.140 --> 00:01:10.920 in Konigsberg, Prussia. Yeah. What's immediately 00:01:10.920 --> 00:01:13.359 striking is that he wasn't just part of the Enlightenment. 00:01:13.540 --> 00:01:16.939 In a way, he embodied its systematic, disciplined 00:01:16.939 --> 00:01:19.799 quest to map the precise boundaries of human 00:01:19.799 --> 00:01:22.000 knowledge. He did. He's often painted as this 00:01:22.000 --> 00:01:25.489 ultimate. abstract, head in the clouds, academic. 00:01:25.750 --> 00:01:28.750 Right. But his biography provides really essential 00:01:28.750 --> 00:01:32.670 context for his later, very rigid system. He 00:01:32.670 --> 00:01:34.989 grew up in a Prussian German Lutheran family 00:01:34.989 --> 00:01:37.950 and the household stressed pietist values. And 00:01:37.950 --> 00:01:40.280 what did that entail exactly? Well, it was a 00:01:40.280 --> 00:01:42.540 movement that emphasized deep personal religious 00:01:42.540 --> 00:01:44.939 devotion, a profound sense of humility and a 00:01:44.939 --> 00:01:47.120 very, very literal interpretation of the Bible. 00:01:47.239 --> 00:01:49.859 And this, you know, it instilled an extremely 00:01:49.859 --> 00:01:52.799 disciplined and almost ascetic lifestyle right 00:01:52.799 --> 00:01:55.319 from his childhood. That early life sounds incredibly 00:01:55.319 --> 00:01:58.280 strict. Oh, it was. His early education was highly 00:01:58.280 --> 00:02:01.079 rigid. It focused heavily on Latin and religious 00:02:01.079 --> 00:02:03.439 instruction, often at the expense of subjects 00:02:03.439 --> 00:02:05.439 like science and mathematics. Which is fascinating 00:02:05.439 --> 00:02:07.909 given where he ended up. It makes his later scientific 00:02:07.909 --> 00:02:10.430 and philosophical achievements, I mean the sheer 00:02:10.430 --> 00:02:13.490 structural complexity of his critiques, all the 00:02:13.490 --> 00:02:16.210 more remarkable. He really was self -taught in 00:02:16.210 --> 00:02:18.169 many of the fields he came to revolutionize. 00:02:18.330 --> 00:02:21.050 And of course, there's that famous anecdote about 00:02:21.050 --> 00:02:23.770 his life, the one that perfectly reflects the 00:02:23.770 --> 00:02:25.830 discipline he brought to philosophy. The daily 00:02:25.830 --> 00:02:28.469 walk. The daily walk. The sources mentioned he 00:02:28.469 --> 00:02:31.849 lived such a strictly ordered life that his neighbors 00:02:31.849 --> 00:02:34.270 could literally set their clocks by his unchanging 00:02:34.270 --> 00:02:37.740 afternoon walk. That meticulous, almost obsessive 00:02:37.740 --> 00:02:40.659 commitment to routine is exactly what he tried 00:02:40.659 --> 00:02:43.439 to bring to the universe. A systematic, ordered, 00:02:43.639 --> 00:02:46.400 predictable structure, but, and this is key, 00:02:46.639 --> 00:02:48.979 one that still contains space for unpredictable 00:02:48.979 --> 00:02:51.659 freedom. And it seems he brought that order to 00:02:51.659 --> 00:02:54.379 his personal life, too. He did. It's also interesting 00:02:54.379 --> 00:02:56.539 that despite this ordered life, he never married. 00:02:56.909 --> 00:02:59.490 He reportedly contemplated it twice, but he delayed 00:02:59.490 --> 00:03:01.610 the decision both times until the opportunity 00:03:01.610 --> 00:03:04.789 had, well, it had just passed. So he clearly 00:03:04.789 --> 00:03:07.810 favored structure over spontaneity, even in romance. 00:03:08.110 --> 00:03:11.110 Seems so. But before he dedicated himself entirely 00:03:11.110 --> 00:03:13.990 to the critiques, he was deeply involved in the 00:03:13.990 --> 00:03:16.430 physical sciences. He wasn't just musing about 00:03:16.430 --> 00:03:19.210 Newtonian physics. He was, you know, actively 00:03:19.210 --> 00:03:22.360 contributing. Absolutely. At the University of 00:03:22.360 --> 00:03:25.219 Konigsberg, where he started at 16, he studied 00:03:25.219 --> 00:03:28.159 the rationalists like Leibniz and Wolff. But 00:03:28.159 --> 00:03:31.340 his mentor, Martin Knudsen, was key. In what 00:03:31.340 --> 00:03:34.280 way? Knudsen introduced him to Isaac Newton's 00:03:34.280 --> 00:03:37.479 new mathematical physics. But Strong's cautioned 00:03:37.479 --> 00:03:39.840 him against the easy metaphysical solutions of 00:03:39.840 --> 00:03:42.659 the time. Things like pre -established harmony, 00:03:42.939 --> 00:03:45.680 the idea that God just pre -synchronizes all 00:03:45.680 --> 00:03:48.659 minds and matter. Right. Knudsen famously dismissed 00:03:48.659 --> 00:03:51.569 it as the pillow for the lazy mind. Which is 00:03:51.569 --> 00:03:54.289 a fantastic way to describe intellectual complacency. 00:03:54.349 --> 00:03:57.409 And his pre -critical contributions, so before 00:03:57.409 --> 00:03:59.949 his major philosophical works, were genuinely 00:03:59.949 --> 00:04:02.469 groundbreaking science. We're not talking footnotes 00:04:02.469 --> 00:04:04.129 here. No, we're talking about massive intellectual 00:04:04.129 --> 00:04:08.189 leaps. In 1754, for example, he used Newtonian 00:04:08.189 --> 00:04:10.650 principles to argue that the moon's gravity would 00:04:10.650 --> 00:04:13.009 cause Earth's rotation to slow down and eventually 00:04:13.009 --> 00:04:15.270 lead to tidal locking. A prediction that was 00:04:15.270 --> 00:04:17.910 scientifically vindicated much, much later. Much 00:04:17.910 --> 00:04:20.610 later. He also provided one of the first systematic 00:04:20.610 --> 00:04:22.769 attempts to explain the mechanisms of earthquakes 00:04:22.769 --> 00:04:25.370 naturally after the devastating Lisbon earthquake 00:04:25.370 --> 00:04:29.269 in 1755. His specific theory about gas -filled 00:04:29.269 --> 00:04:32.449 caverns was wrong, but the method, the attempt 00:04:32.449 --> 00:04:34.589 at a natural explanation, was revolutionary. 00:04:35.029 --> 00:04:37.009 But the most significant contribution in this 00:04:37.009 --> 00:04:40.430 period was astronomical, wasn't it? Yes. In 1755, 00:04:40.569 --> 00:04:43.089 he authored Universal Natural History and Theory 00:04:43.089 --> 00:04:46.490 of the Heavens, and in it, He lays out the nebular 00:04:46.490 --> 00:04:49.009 hypothesis. Which is? He deduced that the solar 00:04:49.009 --> 00:04:51.709 system and even the Milky Way itself formed from 00:04:51.709 --> 00:04:55.350 these vast spinning gas clouds or nebulae. What's 00:04:55.350 --> 00:04:57.350 truly astonishing is that he was the first to 00:04:57.350 --> 00:04:59.389 extend astronomical thinking beyond our solar 00:04:59.389 --> 00:05:02.490 system. He actually postulated that distant nebulae 00:05:02.490 --> 00:05:05.750 might be other galaxies entirely. Wow. He established 00:05:05.750 --> 00:05:07.949 the foundation of modern cosmology based purely 00:05:07.949 --> 00:05:11.490 on mechanical natural processes. Okay, so if 00:05:11.490 --> 00:05:13.649 he was so brilliant at explaining the universe 00:05:13.649 --> 00:05:17.490 mechanistically, you know, by universal deterministic 00:05:17.490 --> 00:05:21.129 laws, why did he then pivot to the complex, dense 00:05:21.129 --> 00:05:24.970 realm of metaphysics and epistemology? It often 00:05:24.970 --> 00:05:27.389 seems to reject or at least limit the claims 00:05:27.389 --> 00:05:29.860 of science. What drove that? critical projects. 00:05:30.040 --> 00:05:32.800 The scientific success itself created a profound 00:05:32.800 --> 00:05:35.779 moral crisis for him. His primary aim became 00:05:35.779 --> 00:05:38.899 to secure human autonomy, the very basis for 00:05:38.899 --> 00:05:41.560 moral responsibility and religious faith, from 00:05:41.560 --> 00:05:43.759 the threat of mechanism that the Newtonian worldview 00:05:43.759 --> 00:05:46.060 seemed to impose. So the problem was, if the 00:05:46.060 --> 00:05:48.699 entire universe, including us, is just a giant 00:05:48.699 --> 00:05:51.279 machine governed by predictable laws, then where 00:05:51.279 --> 00:05:53.879 is human freedom? Where's accountability? Precisely. 00:05:53.899 --> 00:05:55.920 And the sources point to a specific catalyst 00:05:55.920 --> 00:05:58.379 for this massive reorientation in his thinking. 00:05:58.439 --> 00:06:01.800 David Hume. David Hume. Kant credited the empiricist 00:06:01.800 --> 00:06:04.180 philosopher with awakening him from his dogmatic 00:06:04.180 --> 00:06:07.519 slumber. Hume argued so persuasively that ideas 00:06:07.519 --> 00:06:09.899 we treat as necessary like causality, you know, 00:06:09.899 --> 00:06:12.459 A causes B or objective morality, are not actually 00:06:12.459 --> 00:06:14.180 derived from our sense experience. You never 00:06:14.180 --> 00:06:15.819 see the cause. You just see one thing following 00:06:15.819 --> 00:06:18.699 another. Exactly. You only see constant conjunction. 00:06:19.519 --> 00:06:23.019 And this led to a devastating skepticism, suggesting 00:06:23.019 --> 00:06:25.980 that science was based on mere habit and morality 00:06:25.980 --> 00:06:28.540 was just based on feeling. And Kant saw this 00:06:28.540 --> 00:06:31.420 not just as an academic problem, but as an existential 00:06:31.420 --> 00:06:34.959 one. a threat that could dismantle the very possibility 00:06:34.959 --> 00:06:37.639 of rational knowledge and objective morality. 00:06:37.980 --> 00:06:40.939 He did. He believed reason must be able to counter 00:06:40.939 --> 00:06:43.980 Hume's challenge. His entire life's work then 00:06:43.980 --> 00:06:46.360 became this effort to defend reason's legitimate 00:06:46.360 --> 00:06:50.300 authority by... by defining its bounds and limits, 00:06:50.459 --> 00:06:52.920 and in doing so, preserving the possibility of 00:06:52.920 --> 00:06:55.339 both genuine science and genuine morality. That 00:06:55.339 --> 00:06:57.439 mission is perfectly encapsulated in the three 00:06:57.439 --> 00:06:59.740 guiding questions he sought to answer, which 00:06:59.740 --> 00:07:01.939 really structure his major works. What can I 00:07:01.939 --> 00:07:04.060 know? What should I do? And what may I hope? 00:07:04.319 --> 00:07:06.620 The critique of pure reason handles the first. 00:07:07.050 --> 00:07:09.310 establishing the boundaries of theoretical knowledge. 00:07:09.509 --> 00:07:11.509 The Critique of Practical Reason addresses the 00:07:11.509 --> 00:07:14.110 second, establishing the universal moral law. 00:07:14.310 --> 00:07:16.290 And the Critique of the Power of Judgment kind 00:07:16.290 --> 00:07:18.449 of bridges the two, right? It deals with aesthetics 00:07:18.449 --> 00:07:20.769 and purpose, which informs that third question 00:07:20.769 --> 00:07:24.370 of hope. Yes, and his core revolutionary insights 00:07:24.370 --> 00:07:26.990 summarize the necessary limitation he had to 00:07:26.990 --> 00:07:30.149 impose. It's that famous quote, I had to deny 00:07:30.149 --> 00:07:32.839 knowledge in order to make room for faith. He 00:07:32.839 --> 00:07:34.899 had to show that the human mind is an active 00:07:34.899 --> 00:07:37.779 participant, a contributor to the structure of 00:07:37.779 --> 00:07:41.300 knowledge, a transcendental contribution to escape 00:07:41.300 --> 00:07:44.360 both deterministic mechanism and Humean doubt. 00:07:44.540 --> 00:07:47.319 That phrase, deny knowledge, brings us directly 00:07:47.319 --> 00:07:49.819 to part two. What can we know? This is where 00:07:49.819 --> 00:07:53.079 Kant launches his famous revolution in epistemology. 00:07:53.180 --> 00:07:55.399 Right. Shifting the focus from the object being 00:07:55.399 --> 00:07:58.079 known to the mind that's doing the knowing. And 00:07:58.079 --> 00:08:00.319 the central foundational concept here is what 00:08:00.319 --> 00:08:03.240 he calls synthetic a priori knowledge. This is 00:08:03.240 --> 00:08:05.279 the engine room of the critique of pure reason, 00:08:05.420 --> 00:08:08.019 the CPRR. And to really understand the revolution, 00:08:08.240 --> 00:08:10.620 we have to get a handle on Kant's unique framework 00:08:10.620 --> 00:08:12.839 for classifying knowledge. He uses two pairs 00:08:12.839 --> 00:08:15.040 of distinctions. OK, let's take them one by one 00:08:15.040 --> 00:08:16.939 and try to keep it conversational. First, the 00:08:16.939 --> 00:08:20.079 source of knowledge, a posteriori versus a priori. 00:08:20.079 --> 00:08:23.800 Right. So a posteriori knowledge is empirical. 00:08:24.649 --> 00:08:27.370 It comes after or from experience. For example, 00:08:27.569 --> 00:08:30.189 the sky is blue today. You have to look outside 00:08:30.189 --> 00:08:33.210 to know that. It's contingent. A priori knowledge, 00:08:33.429 --> 00:08:35.450 on the other hand, is independent of all experience. 00:08:35.690 --> 00:08:38.789 It's universal and it's necessary. For example, 00:08:39.009 --> 00:08:42.590 7 plus 5 equals 12. You don't need to physically 00:08:42.590 --> 00:08:45.230 count objects to know this arithmetic fact has 00:08:45.230 --> 00:08:47.230 to always be true. That seems straightforward 00:08:47.230 --> 00:08:51.450 enough. Now, the second distinction. The form 00:08:51.450 --> 00:08:54.549 of the judgment analytic versus synthetic. This 00:08:54.549 --> 00:08:56.490 distinction is about how the judgment functions 00:08:56.490 --> 00:08:59.429 logically. An analytic judgment is one of clarification. 00:08:59.929 --> 00:09:02.350 The predicate concept is already contained within 00:09:02.350 --> 00:09:04.970 the subject concept. Like all bachelors are unmarried. 00:09:05.009 --> 00:09:07.610 Exactly. If you understand the concept of a bachelor, 00:09:07.750 --> 00:09:09.870 you already know he's unmarried. It doesn't amplify 00:09:09.870 --> 00:09:12.429 your knowledge. It just clarifies what you already 00:09:12.429 --> 00:09:15.190 conceptually hold. These are always a priori. 00:09:15.289 --> 00:09:17.730 So an analytic judgment is true by definition. 00:09:18.009 --> 00:09:21.049 Precisely. A synthetic judgment, however, is 00:09:21.049 --> 00:09:24.399 one of amplification. The predicate concept adds 00:09:24.399 --> 00:09:26.940 something new to the subject concept. The classic 00:09:26.940 --> 00:09:29.740 empirical example is, this specific table is 00:09:29.740 --> 00:09:33.080 brown. The concept of table doesn't contain brownness. 00:09:33.179 --> 00:09:35.580 Correct. You need experience to connect those 00:09:35.580 --> 00:09:38.639 two ideas. So these are usually, but not always, 00:09:38.840 --> 00:09:41.840 a posteriori. And the philosophers before Kant 00:09:41.840 --> 00:09:44.220 generally thought knowledge was neatly divided. 00:09:44.299 --> 00:09:47.639 It was either analytic... a priori true by definition 00:09:47.639 --> 00:09:50.879 or synthetic a posteriori true by observation. 00:09:51.159 --> 00:09:54.000 Right. But Kant argued that mathematics and the 00:09:54.000 --> 00:09:56.100 necessary structure of natural science contains 00:09:56.100 --> 00:09:59.659 this crucial third type, synthetic a priori knowledge. 00:10:00.169 --> 00:10:02.090 And the question, how is synthetic a priori knowledge 00:10:02.090 --> 00:10:05.049 possible, becomes the entire central problem 00:10:05.049 --> 00:10:07.330 of the critique. And this is exactly where the 00:10:07.330 --> 00:10:09.889 human crisis hit. Because if universal necessary 00:10:09.889 --> 00:10:12.809 concepts like causation and mathematical certainty 00:10:12.809 --> 00:10:15.669 turned out to be just observed habits or, well, 00:10:15.710 --> 00:10:18.070 analytic trivialities, then objective knowledge 00:10:18.070 --> 00:10:21.250 just collapses. That's the whole game. Take causality. 00:10:21.629 --> 00:10:24.850 Hume said we just observe A followed by B repeatedly. 00:10:25.210 --> 00:10:28.370 Kant argued that for us to experience the world 00:10:28.370 --> 00:10:30.970 as structured and predictable as science requires 00:10:30.970 --> 00:10:34.470 we must possess the concept of causality a priori. 00:10:34.549 --> 00:10:37.929 It must be necessary which is a priori but it 00:10:37.929 --> 00:10:40.750 amplifies knowledge which is synthetic because 00:10:40.750 --> 00:10:43.149 the concept of an event does not logically contain 00:10:43.149 --> 00:10:45.970 the concept of its necessary cause. So if he 00:10:45.970 --> 00:10:48.389 can't prove this kind of knowledge exists modern 00:10:48.389 --> 00:10:51.120 science is basically an illusion. It is. So to 00:10:51.120 --> 00:10:53.559 solve this, he instituted what he famously called 00:10:53.559 --> 00:10:56.720 his Copernican revolution in philosophy. And 00:10:56.720 --> 00:10:58.259 we really need to spend some time here because 00:10:58.259 --> 00:11:00.360 this is the core paradigm shift. Okay, we'll 00:11:00.360 --> 00:11:03.299 do it. In the original Ptolemaic or pre -Kantian 00:11:03.299 --> 00:11:05.799 view, philosophy just assumed our knowledge had 00:11:05.799 --> 00:11:07.700 to conform to the objects we observed in the 00:11:07.700 --> 00:11:10.240 world. If our idea of an object didn't match 00:11:10.240 --> 00:11:13.659 the object, we blamed the idea. Kant reverses 00:11:13.659 --> 00:11:16.320 this. Completely. He proposes that objects must 00:11:16.320 --> 00:11:18.720 instead conform to the a priori forms of our 00:11:18.720 --> 00:11:21.000 intuition and the categories of our understanding. 00:11:21.399 --> 00:11:23.500 So just like Copernicus shifted the perspective 00:11:23.500 --> 00:11:26.620 from the earth to the sun, Kant shifted the philosophical 00:11:26.620 --> 00:11:30.120 focus from the passive object to the active knowing 00:11:30.120 --> 00:11:33.240 subject. The mind isn't a blank slate. It's an 00:11:33.240 --> 00:11:35.799 active processor structuring the raw data it 00:11:35.799 --> 00:11:38.820 receives. He breaks down cognition into two stems 00:11:38.820 --> 00:11:41.559 which have to work together. The first is sensibility, 00:11:41.720 --> 00:11:45.080 which is passive reception. It produces intuitions. 00:11:45.259 --> 00:11:48.100 Intuitions are what? Singular non -discursive 00:11:48.100 --> 00:11:50.860 representations. The raw, unfiltered sensory 00:11:50.860 --> 00:11:53.460 input, like the color red or the specific sound 00:11:53.460 --> 00:11:55.639 of a bell. Yeah, the second stem is understanding, 00:11:55.879 --> 00:11:59.059 which processes that raw data. Exactly. The understanding 00:11:59.059 --> 00:12:01.960 is the active synthesis element. It uses concepts 00:12:01.960 --> 00:12:04.259 which are discursive, general representations 00:12:04.259 --> 00:12:08.019 like dog, triangle, or cause, to organize and 00:12:08.019 --> 00:12:10.100 synthesize those intuitions. Which gives us that 00:12:10.100 --> 00:12:12.659 iconic essential synthesis. Thoughts without 00:12:12.659 --> 00:12:15.000 content are empty. Intuitions without concepts 00:12:15.000 --> 00:12:17.990 are blind. That phrase is the perfect summary 00:12:17.990 --> 00:12:20.809 of his entire epistemology. You need the raw 00:12:20.809 --> 00:12:23.669 sensory data, the intuitions, and you need the 00:12:23.669 --> 00:12:27.090 active mental framework, the concepts. If you 00:12:27.090 --> 00:12:29.889 only have sensation without a structure to interpret 00:12:29.889 --> 00:12:32.590 it, you have no knowledge, you're blind. And 00:12:32.590 --> 00:12:34.750 if you only have the abstract structure of thought 00:12:34.750 --> 00:12:37.330 without any content from the world, then you 00:12:37.330 --> 00:12:40.669 have only empty abstract ideas. Knowledge is 00:12:40.669 --> 00:12:43.070 the marriage of the two. This mechanism, the 00:12:43.070 --> 00:12:46.679 mind, actively imposing structure, leads directly 00:12:46.679 --> 00:12:49.360 into his idea of transcendental idealism and 00:12:49.360 --> 00:12:51.220 that separation between the world of appearance 00:12:51.220 --> 00:12:54.940 and the world of unknowable things. Right. Transcendental 00:12:54.940 --> 00:12:57.240 idealism is his metaphysical thesis about the 00:12:57.240 --> 00:12:59.860 nature of space and time. He argues that space 00:12:59.860 --> 00:13:01.940 and time are not features of the world existing 00:13:01.940 --> 00:13:04.059 independently of us. They're not out there. Not 00:13:04.059 --> 00:13:06.000 in the way we assume. They are subjective forms 00:13:06.000 --> 00:13:08.100 of intuition that the human mind contributes 00:13:08.100 --> 00:13:10.899 to all experience. Every human must perceive 00:13:10.899 --> 00:13:12.940 the world through the lens of spatial and temporal 00:13:12.940 --> 00:13:16.139 ordering. They are, as he says, transcendentally 00:13:16.139 --> 00:13:19.759 ideal. So the world we perceive, the world that's 00:13:19.759 --> 00:13:22.600 structured by our innate mental capacities, is 00:13:22.600 --> 00:13:25.279 the world of phenomenal appearances. Precisely. 00:13:25.340 --> 00:13:28.639 We only ever experience a no phenomena. Because 00:13:28.639 --> 00:13:30.480 our knowledge is limited by the structure of 00:13:30.480 --> 00:13:33.299 our mind, by space and time, we can never know 00:13:33.299 --> 00:13:35.759 the things in themselves, which he called noumena. 00:13:35.820 --> 00:13:39.179 The noumenal world. The unknowable reality existing 00:13:39.179 --> 00:13:41.980 outside the conditions of human perception. Yes. 00:13:42.320 --> 00:13:44.840 It sounds like we're trapped inside our own minds, 00:13:44.860 --> 00:13:47.120 only experiencing a highly filtered reality. 00:13:47.279 --> 00:13:49.279 It does a bit, yeah. And that confinement is 00:13:49.279 --> 00:13:52.700 Kant's intended move. The unknowability of the 00:13:52.700 --> 00:13:55.889 noumenal realm is his safeguard. If deterministic 00:13:55.889 --> 00:13:58.509 science can only describe the phenomenal world, 00:13:58.570 --> 00:14:00.490 the world of appearance structured by necessary 00:14:00.490 --> 00:14:03.750 laws like causation, then it can't fully destroy 00:14:03.750 --> 00:14:06.029 the possibility of freedom. Which might reside 00:14:06.029 --> 00:14:09.070 in that unknowable noumenal realm. Exactly. But 00:14:09.070 --> 00:14:11.370 this separation immediately sparked a huge controversy, 00:14:11.669 --> 00:14:14.190 even among his early followers. Is the thing 00:14:14.190 --> 00:14:16.210 in itself a completely separate, inaccessible 00:14:16.210 --> 00:14:19.649 world, a two -world view? Or is it the same object, 00:14:19.769 --> 00:14:21.950 just considered, apart from the conditions of 00:14:21.950 --> 00:14:25.000 our human perception, a two -aspect view? That 00:14:25.000 --> 00:14:28.000 debate is crucial. The two -world view sees the 00:14:28.000 --> 00:14:30.620 noumenon as this separate ontological domain, 00:14:30.940 --> 00:14:35.179 a fundamental limit to human existence. It argues 00:14:35.179 --> 00:14:37.840 the object is the same, but the thing in itself 00:14:37.840 --> 00:14:40.340 is simply the object considered purely through 00:14:40.340 --> 00:14:43.720 the intellect, abstracted from our senses. Kant's 00:14:43.720 --> 00:14:46.279 language sometimes leans toward the former, but 00:14:46.279 --> 00:14:48.559 the philosophical utility leans toward the latter. 00:14:49.129 --> 00:14:51.269 It's a limitation of access, not necessarily 00:14:51.269 --> 00:14:54.230 an assertion of two distinct realities. Regardless, 00:14:54.450 --> 00:14:57.610 for us as human knowers, we can only ever access 00:14:57.610 --> 00:15:00.029 the phenomenal. That's the bottom line. And to 00:15:00.029 --> 00:15:02.450 move from this mental framework to guaranteeing 00:15:02.450 --> 00:15:05.309 objective, necessary knowledge, he undertook 00:15:05.309 --> 00:15:07.330 the mammoth task of the transcendental deduction. 00:15:07.649 --> 00:15:09.730 What is he actually trying to prove or deduce 00:15:09.730 --> 00:15:12.440 here? He is proving the necessary validity of 00:15:12.440 --> 00:15:14.940 the categories of understanding. These are 12 00:15:14.940 --> 00:15:18.620 universal, pure concepts like substance, quantity, 00:15:18.820 --> 00:15:21.299 and most importantly, causation that the mind 00:15:21.299 --> 00:15:24.080 actively contributes. These categories are the 00:15:24.080 --> 00:15:26.340 essential features that define what it is to 00:15:26.340 --> 00:15:28.720 be a thing in general. So they are the necessary 00:15:28.720 --> 00:15:31.419 conditions for any possible object of experience 00:15:31.419 --> 00:15:34.419 to be thought of as an object by us. Yes. But 00:15:34.419 --> 00:15:37.519 why must we use those specific 12 categories? 00:15:37.639 --> 00:15:40.840 Why not 10 or 20? The necessity comes down to 00:15:40.840 --> 00:15:42.960 the conditions required for self -consciousness 00:15:42.960 --> 00:15:45.860 itself. This is the transcendental unity of apperception, 00:15:45.980 --> 00:15:48.320 the TUA. This is probably the most conceptually 00:15:48.320 --> 00:15:51.629 dense part of the whole thing. It is. But Kant's 00:15:51.629 --> 00:15:54.049 argument is that for you to recognize disparate 00:15:54.049 --> 00:15:57.370 experiences, a sound, a smell, a sight, as your 00:15:57.370 --> 00:15:59.509 experience, for them to belong to a single identical 00:15:59.509 --> 00:16:02.009 subject, there has to be a systematic way to 00:16:02.009 --> 00:16:03.909 bring them together, to synthetically combine 00:16:03.909 --> 00:16:06.049 them. This is where that famous formulation comes 00:16:06.049 --> 00:16:08.350 in, the, I think must be able to accompany all 00:16:08.350 --> 00:16:10.789 my representations. Exactly. Think of it this 00:16:10.789 --> 00:16:14.210 way. If you see a sequence of events smoke, then 00:16:14.210 --> 00:16:17.090 fire. and you want to say, I experienced smoke 00:16:17.090 --> 00:16:19.870 and then I experienced fire, you need to synthetically 00:16:19.870 --> 00:16:22.629 connect those two separate intuitions into one 00:16:22.629 --> 00:16:25.009 coherent thought. And that connection requires 00:16:25.009 --> 00:16:28.179 a rule. It requires a rule? A category, in this 00:16:28.179 --> 00:16:30.960 case, causality. Since self -consciousness requires 00:16:30.960 --> 00:16:33.500 the synthetic combination and that combination 00:16:33.500 --> 00:16:35.799 requires the categories, the categories must 00:16:35.799 --> 00:16:38.240 necessarily apply to everything we can possibly 00:16:38.240 --> 00:16:41.200 experience. Wow. Okay. So the categories are 00:16:41.200 --> 00:16:43.480 simply the necessary preconditions for having 00:16:43.480 --> 00:16:46.740 a coherent singular consciousness in a structured 00:16:46.740 --> 00:16:49.480 world. They are the grammar of objective experience. 00:16:49.960 --> 00:16:52.440 And this framework allows him to directly address 00:16:52.440 --> 00:16:54.620 human libeness through the principles of pure 00:16:54.620 --> 00:16:56.750 understanding, particularly the... analogies 00:16:56.750 --> 00:17:00.090 of experience. So how does he specifically dismantle 00:17:00.090 --> 00:17:02.690 Hume's skepticism about causality with this? 00:17:02.789 --> 00:17:05.210 Hume said we only observe constant conjunction, 00:17:05.549 --> 00:17:08.569 not necessity. Kant countered in the second analogy 00:17:08.569 --> 00:17:11.750 the principle of causality. He argues that for 00:17:11.750 --> 00:17:13.990 us to distinguish between a subjective succession 00:17:13.990 --> 00:17:16.390 like I see a house and then later I see a river. 00:17:17.180 --> 00:17:18.920 The order doesn't matter. Right. I could have 00:17:18.920 --> 00:17:20.559 seen them in the other order. And an objective 00:17:20.559 --> 00:17:22.940 succession, like seeing smoke and then seeing 00:17:22.940 --> 00:17:25.619 fire, where the order is mandatory. For that 00:17:25.619 --> 00:17:28.019 distinction to be possible, we need a rule. That 00:17:28.019 --> 00:17:30.539 rule is the necessary rule of succession, causal 00:17:30.539 --> 00:17:32.940 law. The objective ordering of events requires 00:17:32.940 --> 00:17:35.359 the category of causation to make them possible 00:17:35.359 --> 00:17:38.539 as experience. And he also addresses Leibniz's 00:17:38.539 --> 00:17:41.119 idea of a world that interacts via pre -established 00:17:41.119 --> 00:17:43.319 harmony. That's the third analogy, the principle 00:17:43.319 --> 00:17:46.319 of reciprocity. Kant argues that for objects 00:17:46.319 --> 00:17:48.539 in different regions to be perceived as existing 00:17:48.539 --> 00:17:51.440 simultaneously in one shared time, they must 00:17:51.440 --> 00:17:54.200 stand in a mutual causal relation to one another. 00:17:55.119 --> 00:17:58.279 Simultaneity implies interaction. This whole 00:17:58.279 --> 00:18:01.339 analytic enterprise proves that synthetic a priori 00:18:01.339 --> 00:18:04.059 concepts aren't metaphysical speculation. They 00:18:04.059 --> 00:18:06.660 are foundational to experience itself. But Kant 00:18:06.660 --> 00:18:09.119 wasn't just building a foundation. He was also 00:18:09.119 --> 00:18:12.039 building a fence around it. The second part of 00:18:12.039 --> 00:18:14.319 the critique, the transcendental dialectic, is 00:18:14.319 --> 00:18:16.579 devoted to setting limits. This is his crucial 00:18:16.579 --> 00:18:19.480 negative task. It's about exposing the failure 00:18:19.480 --> 00:18:22.160 of reason when it tries to gain theoretical knowledge 00:18:22.160 --> 00:18:24.980 independent of sensibility, when it tries to 00:18:24.980 --> 00:18:27.759 apply the categories outside the limits of possible 00:18:27.759 --> 00:18:30.299 experience. And reason has a natural tendency 00:18:30.299 --> 00:18:33.779 to do this. Yes. By its very nature, reason has 00:18:33.779 --> 00:18:36.579 a drive to unify and complete knowledge, producing 00:18:36.579 --> 00:18:39.769 ideas like the soul, the world in its entirety, 00:18:39.890 --> 00:18:43.430 and God. And since these ideas, like the totality 00:18:43.430 --> 00:18:45.609 of the world, can never be experienced, they 00:18:45.609 --> 00:18:47.869 aren't bound by the categories, and they lead 00:18:47.869 --> 00:18:51.190 to what he calls transcendental illusion. Right. 00:18:51.269 --> 00:18:53.910 When reason tries to prove claims about these 00:18:53.910 --> 00:18:56.190 non -empirical ideas, it runs into the famous 00:18:56.190 --> 00:18:58.509 antinomies, or contradictions of reason with 00:18:58.509 --> 00:19:01.349 itself. Pott presents four cases where reason, 00:19:01.470 --> 00:19:03.910 when it's unbounded, can prove equally plausible 00:19:03.910 --> 00:19:06.670 opposing theses. Give us the most classic example 00:19:06.670 --> 00:19:09.119 of an antimony. The most famous is the third 00:19:09.119 --> 00:19:11.660 antinomy, which asks whether free will exists 00:19:11.660 --> 00:19:14.880 or not. The thesis argues that free will must 00:19:14.880 --> 00:19:17.200 exist because if every event is determined by 00:19:17.200 --> 00:19:19.259 a previous event, then there's no possibility 00:19:19.259 --> 00:19:22.839 for morality. But the antithesis argues the opposite. 00:19:23.119 --> 00:19:25.480 The antithesis argues that free will cannot exist 00:19:25.480 --> 00:19:28.119 because nature is entirely deterministic. And 00:19:28.119 --> 00:19:30.519 if we admit a causality of freedom, we interrupt 00:19:30.519 --> 00:19:33.319 the necessary universal chain of nature. So reason 00:19:33.319 --> 00:19:36.660 proves both that we must be free and that we 00:19:36.660 --> 00:19:40.200 cannot be free. That's philosophically frustrating. 00:19:40.440 --> 00:19:43.339 It is. And Kant resolves this by arguing that 00:19:43.339 --> 00:19:45.339 these contradictions only apply when we assume 00:19:45.339 --> 00:19:47.539 they must apply to the entire world, including 00:19:47.539 --> 00:19:50.420 the things in themselves. By returning to his 00:19:50.420 --> 00:19:52.660 phenomenon -numenon distinction, he resolves 00:19:52.660 --> 00:19:55.309 the conflict. How so? Nature is deterministic 00:19:55.309 --> 00:19:57.309 in the phenomenal world, the world of appearance 00:19:57.309 --> 00:19:59.710 that we structure and observe. Freedom, however, 00:19:59.849 --> 00:20:01.890 exists as a necessary assumption in the noumenal 00:20:01.890 --> 00:20:04.369 realm, the realm of things in themselves. The 00:20:04.369 --> 00:20:07.009 contradictions are just pseudoscience, born from 00:20:07.009 --> 00:20:09.430 reason overstepping its bounds. So the ultimate 00:20:09.430 --> 00:20:12.049 takeaway is that these speculative ideas, soul, 00:20:12.289 --> 00:20:15.529 world, God lack genuine cognition because we 00:20:15.529 --> 00:20:18.250 can't apply our categories to them. But they 00:20:18.250 --> 00:20:21.250 aren't useless. Not at all. They serve an indispensable 00:20:21.250 --> 00:20:24.670 regulatory function. They motivate us to organize 00:20:24.670 --> 00:20:27.490 our empirical inquiry, pushing us toward greater 00:20:27.490 --> 00:20:29.529 unity and completeness in our understanding, 00:20:29.829 --> 00:20:32.789 even if we can never reach the final metaphysical 00:20:32.789 --> 00:20:35.950 certainty about those concepts. By showing what 00:20:35.950 --> 00:20:38.769 we cannot know, Kant cleared the field for faith 00:20:38.769 --> 00:20:41.009 and morality to operate without contradiction 00:20:41.009 --> 00:20:44.210 from deterministic science. That denial of knowledge 00:20:44.210 --> 00:20:46.670 in the theoretical sphere leads us perfectly 00:20:46.670 --> 00:20:50.609 in this. What should I do? Having established 00:20:50.609 --> 00:20:53.109 the limits of theoretical reason, Kant needed 00:20:53.109 --> 00:20:55.710 to guarantee space for what we must do. Which 00:20:55.710 --> 00:20:57.490 leads us directly to his revolutionary ethical 00:20:57.490 --> 00:21:00.049 framework. This is the move from the critique 00:21:00.049 --> 00:21:02.630 of pure reason to the critique of practical reason. 00:21:02.930 --> 00:21:05.670 So if we cannot know, we are free through observation. 00:21:06.279 --> 00:21:09.400 We must act as if we are free because moral action 00:21:09.400 --> 00:21:12.160 absolutely requires practical freedom, the independence 00:21:12.160 --> 00:21:14.559 of the will from, as he put it, necessitation 00:21:14.559 --> 00:21:17.759 through sensuous impulses. Rational faith and 00:21:17.759 --> 00:21:20.019 morality requires we assume ourselves to be free. 00:21:20.180 --> 00:21:22.880 Otherwise, terms like duty and responsibility 00:21:22.880 --> 00:21:25.640 are just meaningless. And for Kant, the source 00:21:25.640 --> 00:21:29.250 of morality is entirely internal and pure. The 00:21:29.250 --> 00:21:32.210 goodwill itself. Yes. The goodwill is not good 00:21:32.210 --> 00:21:34.970 because of what it affects or accomplishes. It 00:21:34.970 --> 00:21:38.029 is good solely through its willing. It acts from 00:21:38.029 --> 00:21:40.650 duty in accordance with a universal moral law. 00:21:40.890 --> 00:21:43.369 This is a radical departure from basing ethics 00:21:43.369 --> 00:21:45.490 on outcomes like utility or personal feelings. 00:21:45.650 --> 00:21:47.569 Absolutely. The only thing that is good without 00:21:47.569 --> 00:21:50.269 qualification is a goodwill. And the moral standard 00:21:50.269 --> 00:21:52.289 derived from this principle obliges one to treat 00:21:52.289 --> 00:21:54.710 humanity, which he defines as rational agency. 00:21:55.259 --> 00:21:58.119 In oneself and others, always as an end in itself, 00:21:58.319 --> 00:22:01.019 and never merely as a means. That's the enduring 00:22:01.019 --> 00:22:04.420 heart of Kantian ethics. It is. This concept 00:22:04.420 --> 00:22:07.460 provides the absolute non -negotiable worth of 00:22:07.460 --> 00:22:10.539 every rational person. When you use someone merely 00:22:10.539 --> 00:22:13.160 as a means, you are disrespecting their fundamental 00:22:13.160 --> 00:22:15.839 rational capacity to set and pursue their own 00:22:15.839 --> 00:22:18.720 ends. You're reducing them to a tool for your 00:22:18.720 --> 00:22:22.460 own contingent desires. The will tests its maxims 00:22:22.460 --> 00:22:25.200 against the supreme principle of morality, which 00:22:25.200 --> 00:22:28.339 is the categorical imperative. But first, let's 00:22:28.339 --> 00:22:30.400 make absolutely clear why it's not a hypothetical 00:22:30.400 --> 00:22:33.240 imperative. A hypothetical imperative is conditional 00:22:33.240 --> 00:22:36.299 and relative. It says if you want X, then do 00:22:36.299 --> 00:22:38.779 Y. For example, if you want to pass the exam, 00:22:39.000 --> 00:22:41.630 then you should study. It only binds you if you 00:22:41.630 --> 00:22:43.690 actually desire the end. You can always opt out 00:22:43.690 --> 00:22:45.630 by saying I don't care about passing. Exactly. 00:22:45.809 --> 00:22:48.890 The categorical imperative, by contrast, is absolute. 00:22:49.009 --> 00:22:52.730 It binds all rational agents necessarily, universally, 00:22:53.049 --> 00:22:55.410 and without exception, regardless of their contingent 00:22:55.410 --> 00:22:58.170 desires. It is grounded purely in the principle 00:22:58.170 --> 00:23:01.140 of reason itself. Because all instrumental reasoning 00:23:01.140 --> 00:23:04.000 has been excluded, the moral law must be the 00:23:04.000 --> 00:23:06.839 form of lawfulness itself. It just dictates that 00:23:06.839 --> 00:23:09.140 your action must be capable of being universalized. 00:23:09.259 --> 00:23:11.940 That's the core of it. And Kant provided three 00:23:11.940 --> 00:23:15.200 main ways to express this universal moral law, 00:23:15.380 --> 00:23:17.259 which he claimed were different sides of the 00:23:17.259 --> 00:23:20.109 same coin. Let's start with the first, the formula 00:23:20.109 --> 00:23:22.549 of universal law. Okay. The formula of universal 00:23:22.549 --> 00:23:25.869 law dictates, act only in accordance with that 00:23:25.869 --> 00:23:28.349 maxim through which you at the same time can 00:23:28.349 --> 00:23:31.509 will that it become a universal law. The crucial 00:23:31.509 --> 00:23:33.910 element here is the maxim. Which is your personal 00:23:33.910 --> 00:23:36.410 policy, your intention. Yes, your subjective 00:23:36.410 --> 00:23:39.230 principle of volition. You must test your personal 00:23:39.230 --> 00:23:42.849 policy by asking, what happens if every rational 00:23:42.849 --> 00:23:45.829 being adopts this policy as a binding universal 00:23:45.829 --> 00:23:49.349 law of nature? If the maxim fails the universalization 00:23:49.349 --> 00:23:52.789 test, it fails morally. And the source has distinguished 00:23:52.789 --> 00:23:55.369 two specific ways it can fail. The first is a 00:23:55.369 --> 00:23:57.369 contradiction in conception. This means that 00:23:57.369 --> 00:23:59.650 when the maxim is universalized, it becomes logically 00:23:59.650 --> 00:24:01.730 impossible for it to function as originally intended. 00:24:02.029 --> 00:24:04.150 The classic example is making a false promise. 00:24:04.369 --> 00:24:06.730 Right. Making a false promise when you're in 00:24:06.730 --> 00:24:09.589 distress. If everyone made false promises whenever 00:24:09.589 --> 00:24:12.509 they needed money, the very institution of promising 00:24:12.509 --> 00:24:15.069 would disappear. No one would believe promises, 00:24:15.269 --> 00:24:18.170 so your original attempt to make a promise, even 00:24:18.170 --> 00:24:21.170 a false one, is conceptually destroyed. So that's 00:24:21.170 --> 00:24:24.049 a test of logical possibility. The second failure 00:24:24.049 --> 00:24:26.230 mode, the contradiction in the will, is more 00:24:26.230 --> 00:24:28.660 about rational desire. This failure mode occurs 00:24:28.660 --> 00:24:31.119 when universalizing the maxim doesn't lead to 00:24:31.119 --> 00:24:34.000 a logical impossibility, but rather to a state 00:24:34.000 --> 00:24:36.140 of affairs that no rational being could will 00:24:36.140 --> 00:24:39.480 or desire. Kant used the example of failing to 00:24:39.480 --> 00:24:41.940 cultivate one's natural talents. It's logically 00:24:41.940 --> 00:24:44.480 possible for everyone to just be lazy. It is, 00:24:44.480 --> 00:24:46.660 but Kant argues that a rational being recognizing 00:24:46.660 --> 00:24:49.740 the unpredictable need for aid and means to achieve 00:24:49.740 --> 00:24:52.680 future ends would necessarily will that their 00:24:52.680 --> 00:24:55.579 own talents and the talents of others be developed. 00:24:56.330 --> 00:24:59.009 Failing to develop talents contradicts the rational 00:24:59.009 --> 00:25:01.589 will's necessary desire for means to achieve 00:25:01.589 --> 00:25:03.829 whatever ends its sets. So the first formula 00:25:03.829 --> 00:25:05.809 is about avoiding self -defeating principles. 00:25:06.109 --> 00:25:07.910 This brings us to the second major formulation, 00:25:08.269 --> 00:25:11.710 the formula of humanity as end in itself. So 00:25:11.710 --> 00:25:14.490 act that you use humanity, always at the same 00:25:14.490 --> 00:25:17.109 time as an end, and never merely as a means. 00:25:17.869 --> 00:25:20.450 This shifts the focus from the form of the law 00:25:20.859 --> 00:25:23.759 to the absolute value of the agent. It prohibits 00:25:23.759 --> 00:25:26.240 treating a rational person merely as a disposable 00:25:26.240 --> 00:25:28.599 object or tool. But I have to ask the classic 00:25:28.599 --> 00:25:31.180 question here. Doesn't using a taxi driver or 00:25:31.180 --> 00:25:33.579 a barista mean we are using them as a means to 00:25:33.579 --> 00:25:36.000 our own end? That's the key distinction. Kant 00:25:36.000 --> 00:25:39.420 says, never merely as a means. In those transactional 00:25:39.420 --> 00:25:41.400 examples, you are using them as a means, yes, 00:25:41.619 --> 00:25:44.000 but you are also simultaneously respecting them 00:25:44.000 --> 00:25:46.500 as ends in themselves. They rationally consent 00:25:46.500 --> 00:25:48.900 to the transaction, their human worth is respected. 00:25:49.559 --> 00:25:52.299 So to use someone merely as a means is to do 00:25:52.299 --> 00:25:54.619 something like lying to them or coercing them. 00:25:54.700 --> 00:25:57.200 Exactly. It's to disregard their rational ability 00:25:57.200 --> 00:25:59.900 to consent to the action, reducing them entirely 00:25:59.900 --> 00:26:02.680 to an instrument. And this inherent worth of 00:26:02.680 --> 00:26:05.000 the rational agent leads into the third formulation, 00:26:05.339 --> 00:26:08.039 the formula of economy, or the realm of ends. 00:26:08.460 --> 00:26:10.519 This is the most complex one and it synthesizes 00:26:10.519 --> 00:26:13.680 the first two. It's the idea of the will of every 00:26:13.680 --> 00:26:16.259 rational being as a will giving universal law. 00:26:16.480 --> 00:26:19.259 We are simultaneously subjects of the moral law 00:26:19.259 --> 00:26:22.400 and authors of the moral law. We must act as 00:26:22.400 --> 00:26:24.960 if our maxims were universally legislative in 00:26:24.960 --> 00:26:28.000 a realm of ends, a conceptual community where 00:26:28.000 --> 00:26:30.339 all members, including ourselves, are treated 00:26:30.339 --> 00:26:33.460 as absolute ends. What's powerful about this 00:26:33.460 --> 00:26:36.440 formula is that it establishes freedom, not just 00:26:36.440 --> 00:26:39.640 for morality. but as morality autonomy is self 00:26:39.640 --> 00:26:42.849 -legislation When we act morally, we are not 00:26:42.849 --> 00:26:45.089 following external commands. We are following 00:26:45.089 --> 00:26:47.410 the law we, as rational beings, prescribe for 00:26:47.410 --> 00:26:50.089 ourselves. This freedom from determination by 00:26:50.089 --> 00:26:52.329 external factors like appetite or consequences 00:26:52.329 --> 00:26:55.170 or divine command is the dignity of the rational 00:26:55.170 --> 00:26:57.670 will. Now, a crucial detail often overlooked 00:26:57.670 --> 00:26:59.630 when we focus strictly on the early groundwork 00:26:59.630 --> 00:27:02.210 is the later elaboration in the Doctrine of Virtue. 00:27:02.309 --> 00:27:04.710 Yes, this later work from the Metaphysics of 00:27:04.710 --> 00:27:06.829 Moral shows that Kant's complete moral theory 00:27:06.829 --> 00:27:10.269 is less rigid than critics often suggest. from 00:27:10.269 --> 00:27:12.529 just testing negative constraints, what you cannot 00:27:12.529 --> 00:27:15.210 do, to discussing ends that are at the same time 00:27:15.210 --> 00:27:19.029 duties. Meaning we are required to actively pursue 00:27:19.029 --> 00:27:23.049 certain moral goals. This sounds almost teleological, 00:27:23.170 --> 00:27:25.609 like we have positive duties to affect the world. 00:27:25.789 --> 00:27:28.369 Exactly. We have two positive moral ends that 00:27:28.369 --> 00:27:31.819 our reason constrains us to adopt. First, the 00:27:31.819 --> 00:27:34.259 duty to pursue our own perfection, which includes 00:27:34.259 --> 00:27:36.920 developing our natural talents and, more importantly, 00:27:37.099 --> 00:27:39.839 cultivating a stronger moral disposition. And 00:27:39.839 --> 00:27:42.079 the second. The duty to pursue the happiness 00:27:42.079 --> 00:27:44.880 of others. This demonstrates that Kant's ethics 00:27:44.880 --> 00:27:47.460 in its full scope is not just a deontological 00:27:47.460 --> 00:27:50.700 rulebook, but a framework requiring active, rational 00:27:50.700 --> 00:27:53.099 engagement with the world to foster certain states 00:27:53.099 --> 00:27:55.920 of being and mutual support. Moving on to part 00:27:55.920 --> 00:27:58.980 four, Kant's ambition didn't end with individual 00:27:58.980 --> 00:28:02.000 morality. He extended his system to the state 00:28:02.000 --> 00:28:04.660 and the nature of aesthetic judgment. Let's look 00:28:04.660 --> 00:28:07.079 at his political philosophy, which is encapsulated 00:28:07.079 --> 00:28:10.119 in his vision for lasting global stability. Kant's 00:28:10.119 --> 00:28:12.259 political thought is intensely focused on establishing 00:28:12.259 --> 00:28:15.420 universal and lasting peace. He believed that 00:28:15.420 --> 00:28:17.940 universal history, though it looks chaotic, ultimately 00:28:17.940 --> 00:28:20.559 drives humanity toward a world governed by law. 00:28:20.799 --> 00:28:22.619 And this is laid out in his essay, Perpetual 00:28:22.619 --> 00:28:27.180 Peace. Yes, from 1795. In it, he proposed a proto 00:28:27.180 --> 00:28:29.980 -international framework, a federation of Republican 00:28:29.980 --> 00:28:32.700 states as the only morally and politically viable 00:28:32.700 --> 00:28:35.920 way to end wars for good. He listed specific 00:28:35.920 --> 00:28:38.579 articles required for this perpetual peace. What 00:28:38.579 --> 00:28:41.740 was one of the most vital? One of the definitive 00:28:41.740 --> 00:28:43.619 articles asserted that the civil constitution 00:28:43.619 --> 00:28:47.019 of every state should be Republican. For Kant, 00:28:47.380 --> 00:28:50.160 a Republican constitution, which involves the 00:28:50.160 --> 00:28:52.559 separation of the executive power, the government, 00:28:52.720 --> 00:28:54.779 from the legislative power, the sovereign people, 00:28:55.019 --> 00:28:57.799 is the only way to ensure that the consent of 00:28:57.799 --> 00:28:59.839 the people is required before war is declared. 00:29:00.160 --> 00:29:01.799 Because the people are the ones who suffer the 00:29:01.799 --> 00:29:04.000 cost of war. Exactly. So they're less likely 00:29:04.000 --> 00:29:06.240 to rush into conflict. It provides a structural 00:29:06.240 --> 00:29:09.009 mechanism for peace. It's fascinating that he 00:29:09.009 --> 00:29:11.650 grounds this movement toward peace, not just 00:29:11.650 --> 00:29:13.730 in pure rational will, which is often difficult 00:29:13.730 --> 00:29:16.690 to sustain, but in nature itself. He does. He 00:29:16.690 --> 00:29:18.829 describes the process as being guaranteed by 00:29:18.829 --> 00:29:21.410 what he calls the great artist nature. Nature, 00:29:21.569 --> 00:29:23.490 through its mechanical deterministic course, 00:29:23.710 --> 00:29:26.569 lets conquer to rise through human discord. He 00:29:26.569 --> 00:29:29.569 calls this process fate or providence. So even 00:29:29.569 --> 00:29:32.039 if humans are selfish and irrational. The inherent 00:29:32.039 --> 00:29:34.559 contradictions and difficulties of constant conflict 00:29:34.559 --> 00:29:37.000 will eventually force them, through self -interest, 00:29:37.259 --> 00:29:40.599 into a state of legal order. Nature uses human 00:29:40.599 --> 00:29:43.599 discord to ensure that states, driven by commercial 00:29:43.599 --> 00:29:46.039 interests and the fear of war, will eventually 00:29:46.039 --> 00:29:49.140 accept the necessity of international law. His 00:29:49.140 --> 00:29:51.180 political thought is essentially a doctrine of 00:29:51.180 --> 00:29:54.079 the state based upon law, the red schnapp. That's 00:29:54.079 --> 00:29:56.440 right. The state is the union of men under law, 00:29:56.579 --> 00:29:59.880 and its goal is peace through law. The political 00:29:59.880 --> 00:30:02.359 principle is the universal principle of right. 00:30:02.779 --> 00:30:05.720 Any action is right if it can coexist with everyone's 00:30:05.720 --> 00:30:08.519 freedom in accordance with a universal law. His 00:30:08.519 --> 00:30:10.960 focus is on protecting external freedom. The 00:30:10.960 --> 00:30:13.640 freedom to act without constraint as long as 00:30:13.640 --> 00:30:15.940 you respect the freedom of others. Precisely. 00:30:16.000 --> 00:30:18.319 And regarding actual forms of government, the 00:30:18.319 --> 00:30:20.839 sources highlight his opposition to direct democracy, 00:30:21.099 --> 00:30:23.140 which seems counterintuitive for an Enlightenment 00:30:23.140 --> 00:30:25.579 figure. Why was he against it? He was highly 00:30:25.579 --> 00:30:28.839 specific. He was against direct democracy, which 00:30:28.839 --> 00:30:31.839 he termed a despotism, because he believed that 00:30:31.839 --> 00:30:34.039 when the majority decided on every single matter, 00:30:34.140 --> 00:30:36.940 they risk deciding against one who thus does 00:30:36.940 --> 00:30:39.740 not agree. The same body that creates the law 00:30:39.740 --> 00:30:42.559 also executes it, which can lead to tyranny of 00:30:42.559 --> 00:30:44.920 the majority. So he favored a representative 00:30:44.920 --> 00:30:48.059 mixed government. that strictly adheres to the 00:30:48.059 --> 00:30:50.700 rule of law. Exactly. The ultimate goal is a 00:30:50.700 --> 00:30:53.720 perfectly structured legal order that guarantees 00:30:53.720 --> 00:30:56.359 the maximum external freedom for every individual 00:30:56.359 --> 00:30:58.900 to pursue their own ends so long as they respect 00:30:58.900 --> 00:31:01.680 the same freedom for others. Okay, we shift now 00:31:01.680 --> 00:31:04.160 to the critique of the power of judgment, which 00:31:04.160 --> 00:31:06.819 integrated aesthetics into his massive philosophical 00:31:06.819 --> 00:31:10.660 system. Judgments of taste of beauty are notoriously 00:31:10.660 --> 00:31:14.160 subjective. How did Kant manage to universalize 00:31:14.160 --> 00:31:16.740 them? He argued that judgments of taste are not 00:31:16.740 --> 00:31:19.079 cognitive judgments. They don't tell us about 00:31:19.079 --> 00:31:21.779 the object's properties. Instead, beauty is the 00:31:21.779 --> 00:31:23.740 consciousness of pleasure that accompanies the 00:31:23.740 --> 00:31:26.240 free play of the imagination and the understanding. 00:31:26.519 --> 00:31:29.059 What is this free play? It occurs when an object's 00:31:29.059 --> 00:31:31.500 form seems to harmonize spontaneously with our 00:31:31.500 --> 00:31:33.819 cognitive faculties, even though no specific 00:31:33.819 --> 00:31:36.619 concept is applied. And this pleasure must be 00:31:36.619 --> 00:31:39.440 fundamentally disinterested. Disinterested. So 00:31:39.440 --> 00:31:41.880 it can't be tied to personal desire, like the 00:31:41.880 --> 00:31:44.099 pleasantness of chocolate. or to its utility. 00:31:44.400 --> 00:31:47.019 Crucially disinterested. The pleasure is derived 00:31:47.019 --> 00:31:49.519 solely from the contemplation of the form of 00:31:49.519 --> 00:31:51.980 the object. And because this response arises 00:31:51.980 --> 00:31:54.640 from the universal structure of the human mind, 00:31:54.759 --> 00:31:57.839 the faculties that every rational agent possesses, 00:31:57.880 --> 00:32:00.500 we feel entitled to demand that everyone ought 00:32:00.500 --> 00:32:02.980 to agree with our judgment. It lays claim to 00:32:02.980 --> 00:32:05.460 universal validity based on an idea of common 00:32:05.460 --> 00:32:08.380 sense. So if beauty is the pleasure in form and 00:32:08.380 --> 00:32:11.480 harmony, The sublime is something much more challenging, 00:32:11.619 --> 00:32:14.400 something that involves failure, conflict, and 00:32:14.400 --> 00:32:17.339 eventual moral triumph. The sublime is an aesthetic 00:32:17.339 --> 00:32:20.000 quality that is also subjective, but refers to 00:32:20.000 --> 00:32:22.799 an experience of the vast, boundless, or overwhelmingly 00:32:22.799 --> 00:32:25.700 powerful. It challenges the very limits of our 00:32:25.700 --> 00:32:27.779 sensible self. He divides it into the mathematical 00:32:27.779 --> 00:32:30.680 sublime and the dynamical sublime. Let's start 00:32:30.680 --> 00:32:32.890 with the mathematical. The mathematical sublime 00:32:32.890 --> 00:32:35.589 occurs when the imagination fails to grasp an 00:32:35.589 --> 00:32:38.049 object that is absolutely great or formless -like, 00:32:38.089 --> 00:32:39.970 looking up at the night sky or standing before 00:32:39.970 --> 00:32:43.130 a desert. The imagination can't synthesize the 00:32:43.130 --> 00:32:46.130 vast sensory data into a manageable whole. Which 00:32:46.130 --> 00:32:48.869 is initially uncomfortable. Yes. But the pleasure 00:32:48.869 --> 00:32:51.869 arises when reason steps in and asserts the concept 00:32:51.869 --> 00:32:54.410 of the infinite, showing that reason itself is 00:32:54.410 --> 00:32:56.650 superior to our limited sensory imagination. 00:32:57.480 --> 00:33:00.140 The sublime is found not in the object, but in 00:33:00.140 --> 00:33:02.460 the power of our rational faculty to conceive 00:33:02.460 --> 00:33:04.799 of something greater than anything sensory. And 00:33:04.799 --> 00:33:07.059 the dynamical sublime is the feeling of being 00:33:07.059 --> 00:33:10.680 overwhelmed by natural power. A volcano, a massive 00:33:10.680 --> 00:33:13.259 storm. In the dynamical sublime, there is a sense 00:33:13.259 --> 00:33:15.500 of annihilation of the sensible self when faced 00:33:15.500 --> 00:33:18.440 with nature's vast might. We feel powerless physically, 00:33:18.700 --> 00:33:20.740 but the pleasure comes from the resistance of 00:33:20.740 --> 00:33:23.500 reason to that power. It reveals our human moral 00:33:23.500 --> 00:33:26.160 vocation. Our rational agency is independent 00:33:26.160 --> 00:33:28.740 of the mechanical physical world and is therefore 00:33:28.740 --> 00:33:32.099 inviolable. So the storm might kill us, but it 00:33:32.099 --> 00:33:34.680 cannot compromise our moral integrity. In both 00:33:34.680 --> 00:33:37.079 cases, the sublime is ultimately about reason, 00:33:37.180 --> 00:33:39.119 asserting its spiritual strength against the 00:33:39.119 --> 00:33:42.180 limits of sensory or physical experience, connecting 00:33:42.180 --> 00:33:44.660 aesthetics right back to our fundamental practical 00:33:44.660 --> 00:33:47.920 freedom. We have meticulously detailed the incredible 00:33:47.920 --> 00:33:50.859 sophistication of Kant's universal systematic 00:33:50.859 --> 00:33:54.309 architecture. His push for universal reason, 00:33:54.410 --> 00:33:56.910 for autonomy, for treating humanity as an end 00:33:56.910 --> 00:33:59.789 in itself. But we have to now turn to part five. 00:34:00.839 --> 00:34:03.599 The profound and challenging contradictions within 00:34:03.599 --> 00:34:06.339 his legacy, specifically concerning his work 00:34:06.339 --> 00:34:08.639 on anthropology and race. This is a necessary 00:34:08.639 --> 00:34:12.280 and a critical discussion. The sources highlight 00:34:12.280 --> 00:34:14.639 that Kant's system was not hermetically sealed 00:34:14.639 --> 00:34:17.599 off from human nature. He was a pioneer in introducing 00:34:17.599 --> 00:34:20.099 anthropology as a field of study, lecturing on 00:34:20.099 --> 00:34:22.679 it for 23 years. And he divided the study of 00:34:22.679 --> 00:34:24.960 humanity into two approaches. The physiological, 00:34:25.300 --> 00:34:27.059 which is what nature makes of the human being, 00:34:27.119 --> 00:34:29.159 and the pragmatic, which is what a human can 00:34:29.159 --> 00:34:31.579 and should make of himself. And it is specifically 00:34:31.579 --> 00:34:34.780 within this earlier anthropological work that 00:34:34.780 --> 00:34:37.539 Kant is widely cited as a central figure in the 00:34:37.539 --> 00:34:41.679 birth of modern scientific racism. Robert Bernasconi 00:34:41.679 --> 00:34:44.559 states that Kant supplied the first scientific 00:34:44.559 --> 00:34:46.920 definition of race. That's the core of the conflict. 00:34:47.219 --> 00:34:49.760 For much of his mid -career, Kant did promulgate 00:34:49.760 --> 00:34:52.300 a structured theory of race, proposing a hierarchy. 00:34:52.559 --> 00:34:55.460 He attempted to organize human diversity based 00:34:55.460 --> 00:34:58.340 on four inherent temperaments and then plotted 00:34:58.340 --> 00:35:00.440 different racial categories within the system 00:35:00.440 --> 00:35:03.699 based on natural aptitude. The specific prejudices 00:35:03.699 --> 00:35:06.280 Kant articulated are Well, they're disturbing, 00:35:06.460 --> 00:35:08.940 especially given the universalizing nature of 00:35:08.940 --> 00:35:10.800 his moral philosophy. We have to report these 00:35:10.800 --> 00:35:13.320 historical details impartially. Kant explicitly 00:35:13.320 --> 00:35:15.719 stated that only white Europeans contain all 00:35:15.719 --> 00:35:18.789 the impulses of nature. all talents, all dispositions 00:35:18.789 --> 00:35:21.409 to culture and civilization. He claimed they 00:35:21.409 --> 00:35:23.449 were the only group destined to always advance 00:35:23.449 --> 00:35:25.750 to perfection. And his characterizations of other 00:35:25.750 --> 00:35:27.949 groups were highly specific and deeply biased. 00:35:28.190 --> 00:35:31.329 He characterized Hindus as educated but incapable 00:35:31.329 --> 00:35:34.530 of abstract concepts, claiming they had gone 00:35:34.530 --> 00:35:37.349 far in the art of deception. He wrote that black 00:35:37.349 --> 00:35:39.670 Africans can be educated but only as servants. 00:35:39.909 --> 00:35:42.309 And regarding Native Americans, he claimed they 00:35:42.309 --> 00:35:45.079 cannot be educated. calling them unmotivated, 00:35:45.139 --> 00:35:48.280 unfit for culture, and far below the Negro. The 00:35:48.280 --> 00:35:50.360 sources also note that his prejudice extended 00:35:50.360 --> 00:35:52.980 to groups beyond geographical race, including 00:35:52.980 --> 00:35:56.210 explicit anti -Semitism. Yes, he referred to 00:35:56.210 --> 00:35:59.369 Jews as a nation of cheaters, enslaved to the 00:35:59.369 --> 00:36:02.110 material world, and therefore incapable of being 00:36:02.110 --> 00:36:04.309 incorporated into an ethical Christian society. 00:36:04.789 --> 00:36:07.929 Furthermore, he opposed miscegenation, believing 00:36:07.929 --> 00:36:10.610 the fusing of races was undesirable and would 00:36:10.610 --> 00:36:14.269 degrade whites. These views are in direct, glaring 00:36:14.269 --> 00:36:16.590 contradiction to his own formula of humanity, 00:36:16.849 --> 00:36:19.510 which mandates that every rational being possesses 00:36:19.510 --> 00:36:22.550 absolute worth. They are! And critics argue that 00:36:22.550 --> 00:36:25.369 Kantian ethical universalism while globally influential, 00:36:25.789 --> 00:36:28.190 has often been studied in a way that minimizes 00:36:28.190 --> 00:36:30.969 or sanitizes this earlier racial theorizing. 00:36:31.150 --> 00:36:34.309 However, there's a crucial complex detail to 00:36:34.309 --> 00:36:37.369 consider. The sources argue there was a demonstrable 00:36:37.369 --> 00:36:40.250 later change in Kant's views, particularly in 00:36:40.250 --> 00:36:42.429 the last decade of his life. Pauline Kleingeld 00:36:42.429 --> 00:36:45.050 has detailed this shift. In his later works, 00:36:45.250 --> 00:36:49.190 most notably Perpetual Peace in 1795, Kant rejected 00:36:49.190 --> 00:36:52.010 racial hierarchies and condemned European colonialism, 00:36:52.570 --> 00:36:55.550 arguing it was morally unjust and fundamentally 00:36:55.550 --> 00:36:58.050 incompatible with the universal moral rights 00:36:58.050 --> 00:37:01.010 he himself had established. So a belated recognition 00:37:01.010 --> 00:37:04.030 that his earlier theories couldn't coexist with 00:37:04.030 --> 00:37:06.050 the categorical. imperative? It suggests that 00:37:06.050 --> 00:37:08.449 yes. And some German scholars like Daniel Pascal 00:37:08.449 --> 00:37:11.289 Zorn offer a contextual interpretation. They 00:37:11.289 --> 00:37:13.269 note that some of the most extreme quotes were 00:37:13.269 --> 00:37:16.269 part of a specific public academic exchange where 00:37:16.269 --> 00:37:18.449 Kant was actually arguing against the idea that 00:37:18.449 --> 00:37:20.869 races were distinct species. So what was his 00:37:20.869 --> 00:37:23.889 point then? While his language remained inexcusably 00:37:23.889 --> 00:37:26.030 biased, the philosophical point he was making 00:37:26.030 --> 00:37:29.170 in that context was the unity of humanity, that 00:37:29.170 --> 00:37:31.949 all human variation originated from a single 00:37:31.949 --> 00:37:35.420 stem. Zorn argues that by looking at the full 00:37:35.420 --> 00:37:37.940 arc of his scholarship, we see a progression 00:37:37.940 --> 00:37:41.079 toward ethical universalism, even if he personally 00:37:41.079 --> 00:37:43.639 struggled to shed the deeply entrenched biases 00:37:43.639 --> 00:37:46.760 of the zeitgeist in which he lived. The struggle 00:37:46.760 --> 00:37:49.239 itself reveals a profound tension within his 00:37:49.239 --> 00:37:51.900 own life's work. It does. We conclude our deep 00:37:51.900 --> 00:37:54.000 dive by acknowledging the profound and sometimes 00:37:54.000 --> 00:37:57.170 contradictory influence of Kant. He is credited 00:37:57.170 --> 00:37:59.110 with changing the entire nature of philosophical 00:37:59.110 --> 00:38:01.889 inquiry, moving it away from simple rational 00:38:01.889 --> 00:38:05.090 speculation toward a critical examination of 00:38:05.090 --> 00:38:07.349 the very conditions of knowledge. His innovation 00:38:07.349 --> 00:38:10.010 was fundamentally placing the active, rational 00:38:10.010 --> 00:38:12.309 human subject at the center of the cognitive 00:38:12.309 --> 00:38:15.360 world. He systematically explored the inherent 00:38:15.360 --> 00:38:18.219 a priori limits of human knowledge. And even 00:38:18.219 --> 00:38:20.000 though modern science and logic have challenged 00:38:20.000 --> 00:38:22.500 some of his basic tenets, the structural framework 00:38:22.500 --> 00:38:24.780 he established remains the foundation for almost 00:38:24.780 --> 00:38:27.579 all subsequent philosophy. His enduring ideas, 00:38:27.900 --> 00:38:31.420 the categorical imperative, moral autonomy, the 00:38:31.420 --> 00:38:34.559 idea that humans should be treated as ends, have 00:38:34.559 --> 00:38:36.960 become the necessary vocabulary for discussing 00:38:36.960 --> 00:38:39.900 ethical and political thought globally. The influence 00:38:39.900 --> 00:38:43.719 is breathtakingly broad. German Idealism Fichte. 00:38:44.199 --> 00:38:46.940 Hegel, Schelling, directly built upon and then 00:38:46.940 --> 00:38:49.380 transformed his position. Hegel, for instance, 00:38:49.559 --> 00:38:51.519 criticized Kant for setting a transcendental 00:38:51.519 --> 00:38:54.039 subject apart from the evolving nature of history 00:38:54.039 --> 00:38:57.420 and society. But even Hegel maintained and expanded 00:38:57.420 --> 00:39:00.280 Kant's concept of freedom. He did. And his thought 00:39:00.280 --> 00:39:02.460 flowed into virtually every modern philosophical 00:39:02.460 --> 00:39:05.119 movement, from Marxism, which used dialectical 00:39:05.119 --> 00:39:07.639 structures, to positivism, which respected the 00:39:07.639 --> 00:39:10.340 limits of empirical knowledge, to phenomenology 00:39:10.340 --> 00:39:12.599 and existentialism, which explored the world 00:39:12.599 --> 00:39:14.920 of appearances. And critically, his work became 00:39:14.920 --> 00:39:17.219 foundational for modern critical theory. Absolutely. 00:39:17.599 --> 00:39:20.119 Thinkers like Juergen Habermas and John Rawls 00:39:20.119 --> 00:39:22.679 rely heavily on Kantian concepts like autonomy 00:39:22.679 --> 00:39:25.380 and the idea of a universal, non -contingent 00:39:25.380 --> 00:39:28.039 standard for justice. Rawls' original position, 00:39:28.219 --> 00:39:30.099 for example, is a procedure designed to test 00:39:30.099 --> 00:39:32.599 the universalizability of principles, much like 00:39:32.599 --> 00:39:35.079 the categorical imperative. And his influence 00:39:35.079 --> 00:39:38.630 stretched far beyond academia. We find Kantian 00:39:38.630 --> 00:39:40.730 principles woven into Max Weber's sociology, 00:39:41.630 --> 00:39:44.590 Jean Piaget's developmental psychology, and Carl 00:39:44.590 --> 00:39:47.590 Jung's psychological types. Even in hard sciences, 00:39:47.889 --> 00:39:50.989 the reach is impressive. Albert Einstein cited 00:39:50.989 --> 00:39:53.329 Kant's early work on mathematics and synthetic 00:39:53.329 --> 00:39:55.409 a priori knowledge as an intellectual spark, 00:39:55.690 --> 00:39:58.289 even though his own theory of relativity eventually 00:39:58.289 --> 00:40:01.010 contradicted the absolute nature of Kantian space 00:40:01.010 --> 00:40:03.829 and time. And politically, his blueprint for 00:40:03.829 --> 00:40:07.800 lasting stability perpetual peace, foreshadowed 00:40:07.800 --> 00:40:10.699 modern international relations theory. The concept 00:40:10.699 --> 00:40:12.840 of the democratic peace theory, the idea that 00:40:12.840 --> 00:40:15.079 constitutional republics are less likely to fight 00:40:15.079 --> 00:40:17.820 each other, is a direct intellectual descendant 00:40:17.820 --> 00:40:20.260 of Kant's political vision. It is. It's clear 00:40:20.260 --> 00:40:22.000 that Kant provided the philosophical vocabulary 00:40:22.000 --> 00:40:24.800 for discussing objective knowledge, human freedom, 00:40:24.900 --> 00:40:27.840 and universal moral obligations that still dominates 00:40:27.840 --> 00:40:30.710 intellectual discourse today. And we can't finish 00:40:30.710 --> 00:40:32.590 a discussion of the architect of reason without 00:40:32.590 --> 00:40:35.130 his most famous and beautiful line from the critique 00:40:35.130 --> 00:40:37.510 of practical reason, which perfectly encapsulates 00:40:37.510 --> 00:40:39.889 the tension of his system. Two things fill my 00:40:39.889 --> 00:40:42.230 mind with ever new and increasing admiration 00:40:42.230 --> 00:40:45.530 and reverence, the starry heavens above me and 00:40:45.530 --> 00:40:48.210 the moral law within me. That, quote, perfectly 00:40:48.210 --> 00:40:51.610 balances the awe we feel for the vast, deterministic, 00:40:51.630 --> 00:40:54.179 structured universe of appearance. The theoretical 00:40:54.179 --> 00:40:57.300 critique. With the absolute necessary and autonomous 00:40:57.300 --> 00:41:00.119 moral mandate inside every rational agent, the 00:41:00.119 --> 00:41:02.320 practical critique. He was a man who tried to 00:41:02.320 --> 00:41:04.559 put structure to the universe and in doing so 00:41:04.559 --> 00:41:06.980 proved that while the universe is awesome, the 00:41:06.980 --> 00:41:09.400 human capacity for morality is more awesome still. 00:41:09.639 --> 00:41:11.719 God's systematic philosophy forced the world 00:41:11.719 --> 00:41:13.980 to reckon with the limits of reason while simultaneously 00:41:13.980 --> 00:41:16.519 affirming the absolute necessity of a universal 00:41:16.519 --> 00:41:20.019 moral law binding in all rational beings. You've 00:41:20.019 --> 00:41:21.880 seen that his greatest ethical achievement, the 00:41:21.880 --> 00:41:24.599 categorical imperative demands we recognize every 00:41:24.599 --> 00:41:27.579 human as an end in themselves. Knowing this, 00:41:27.739 --> 00:41:29.940 and knowing that he spent decades arguing for 00:41:29.940 --> 00:41:32.460 a racial hierarchy that he himself ultimately 00:41:32.460 --> 00:41:35.019 rejected as incompatible with his own moral system. 00:41:35.619 --> 00:41:37.800 What does Kant's personal struggle tell us about 00:41:37.800 --> 00:41:39.239 the difference between discovering universal 00:41:39.239 --> 00:41:41.820 truth and achieving the moral perfection required 00:41:41.820 --> 00:41:45.019 to truly live by it? What knowledge, built on 00:41:45.019 --> 00:41:46.699 the categories of your own understanding, might 00:41:46.699 --> 00:41:47.599 you need to re -examine?