Richard Feynman (1918–1988) was an American physicist who won the Nobel Prize for Physics in 1965 for his contribution to the development of quantum electrodynamics, the theory of the interaction between matter and light. During the Second World War, he helped to develop the atomic bomb. He remains one of the most respected modern day scientists, remembered for his curiosity, brilliant mind, and gentle humour. This is a choice collection of his best quotes.