In 1961, Caltech invited Richard Feynman to teach an introductory course in physics. At the time, Feynman was a theoretical physicist with no particular interest in students. He turned out to be an enchanter of the classroom. His lectures went on to become a cultural classic, blending brilliant yet accessible explanations of science with poignant meditations on life’s most profound questions.
They were collected in The Feynman Lectures on Physics. Among the most beautiful is the third lecture in the series, "The Relation of Physics to Other Sciences," in which Feynman illustrates the connectedness of everything to everything else.
Joe Hanson of It’s Okay to be Smart brings Feynman’s wisdom to life in an extremely well done video.