Freeman Dyson: "Half genius, half comedian." Later, when Dyson got to know Feynman very well, he revised his original evaluation to: "A complete genius, A total buffoon."; "Feynman did not use systematic mathematics, but in his own way "reinvented almost the entirety of physics."

Wolfgang Pauli: " Why does this smart young man talk like a bum? ”

Feynman student: “Just like the atomic particles he likes to talk about, they are always in motion, like a dancer, walking around with his head held high and his hands drawing complex and beautiful arcs. Wire. ”

The New York Times: the impossible combination of theoretical physicist barker, all body motion and sound affect.

Hans Bethe: There are two kinds of geniuses in the world: “Ordinary geniuses” Complete great work, but make other scientists feel that if they work hard, they can also complete that kind of work; the other type of genius is like performing magic. The latter kind of genius is Feynman. "; "imitating a Brooklyn accent and manner" to deliberately "hide his fragile soul." "; "Feynman was happier when he was depressed than when anyone else was elated. "

Bohr: "Feynman is confident and upright, not afraid of authority. He is the only person who is not afraid of me and dares to point out my mistakes. ”

Oppenheimer: “He is the most talented young physicist here. He has a very attractive character and personality. He is an excellent teacher and has an understanding of all aspects of physics. Passionate feelings. ”

Leiden (Feynman’s friend): “Feynman had a distinctive personality and was independent in his thinking. He liked to find his own way and was never stubborn. He had a strong thirst for knowledge and advocated making his own thoughts. Leaders enhance their ability to analyze themselves. "

William Fowler: "As long as you tell him some clues, he can make leaps in ideas and diagrams. He is a very helpful and motivating person. He is very knowledgeable about everything. Interested in everything, it’s really no small matter. ”

Goodstein: “Feynman’s scientific contributions were both extraordinary and profound. They bore no resemblance to those of anyone else. He used his personality and outlook to influence the world of science; Re-formulated quantum mechanics, in fact reinvented it. And he gave it to us in a form that is still widely used throughout every field of theoretical physics. ”