Feynman's Lectures on Physics - The Law of Gravitation

The Feynman Lectures on Physics, Volume I: https://www.feynmanlectures.caltech.edu/I_toc.html "In this chapter, we shall discuss one of the most far-reaching generalizations of the human mind. While we are admiring the human mind, we should take some time off to stand in awe of a nature that could follow with such completeness and generality such an elegantly simple principle as the law of gravitation. What is this law of gravitation? "