This Open Culture article reflects on why Richard Feynman remains a beloved educator decades after his death, a sentiment echoed by Bill Gates who calls him “the best teacher I never had.” It highlights Feynman’s rigorous intellectual honesty—specifically his “notebook” technique of explaining concepts in simple terms to identify gaps in understanding—and his ability to convey the “pleasure of finding things out.” The piece suggests that his enduring fame stems not just from his theoretical work, but from his lifelong, engaging conversation with the public about the beauty of physical laws.