The truth that makes men free is for the most part the truth which men prefer not to hear.
Every composer knows the anguish and despair occasioned by forgetting ideas which one had no time to write down.
I know that you believe that you understood what you think I said, but I am not sure you realize that what you heard is not what I meant.
Getting ahead in a difficult profession requires avid faith in yourself. That is why some people with mediocre talent, but with great inner drive, go much further than people with vastly superior talent.
Nothing changes your opinion of a friend so surely as success – yours or his.
A good friend can tell you what is the matter with you in a minute. He may not seem such a good friend after telling.
The most erroneous stories are those we think we know best – and therefore never scrutinize or question.
The most important scientific revolutions all include, as their only common feature, the dethronement of human arrogance from one pedestal after another of previous convictions about our centrality in the cosmos.