Richard Feynman

I learned very early the difference between knowing the name of something and knowing something.

We are trying to prove ourselves wrong as quickly as possible, because only in that way can we find progress.

In order to make progress, one must leave the door to the unknown ajar.

Nobody understands the world they`re in, but some people are better off at it than others.

There was a time when the newspapers said that only twelve men understood the theory of relativity. I do not believe there ever was such a time. There might have been a time when only one man did, because he was the only guy who caught on, before he wrote his paper. But after people read the paper a lot of people understood the theory of relativity in some way or other, certainly more than twelve. On the other hand, I think I can safely say that nobody understands quantum mechanics.

You only live one life, and you make all your mistakes, and learn what not to do, and that`s the end of you.

You have no responsibility to live up to what other people think you ought to accomplish. I have no responsibility to be like they expect me to be. It`s their mistake, not my failing.