Your Humble Servant, Isaac Newton

From the YouTube description:

Almost fifty years ago, Cambridge University Press published the correspondence of Isaac Newton, a seven-volume, 3000-page collection of letters that provides insight into this great, if difficult, genius. William Dunham shares his favorite examples of Newton as correspondent. He ends with Newton’s most-quoted line about standing on the shoulders of giants and how his search for its place of origin led him, improbably, to a library in Philadelphia.