Where Philosophiæ Naturalis Principia Mathematica was mentioned: 3 timestamped quotes from 3 episodes across 1 podcast.
“They are just as sane as the Principia if their whole matter and purpose were not magical. They were nearly all composed during the same 25 years of his mathematical studies."”
“is very close to Newton and that social group and his name is on the first edition of the Principia. These people are this close to each other. But the stuff that I evoke, I won't say—this”