4:22 the way that Kepler discovers the laws of planetary motion… is as you say a work of genius. But through his career, he’s just trying random relationships. In fact, in the book in which he writes down the third law of planetary motion, it’s an aside on The Harmonics of the World.
21:30 we have to ask questions that we’ve never really had to ask before. Or maybe the philosophers had, but now we all have to deal with it.
21:41 there’s this book, The Clockwork Universe by Edward Dolnick, which covers a lot of this era of history we’re talking about.
22:04 Thomas Huxley, who reads The Origin of Species, says, “How stupid not to have thought of that.” Nobody ever says that about Principia, chiding themselves for not having beaten Newton to gravity.
22:37 …nobody really talks about it until Darwin, because Lucretius couldn’t run some experiment and force people to pay attention.
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