It's because somebody knows something about it that we can't talk about physics. It's the things that nobody knows anything about we can discuss.

It is simple, therefore it is beautiful

If the professors of English will complain to me that the students who come to the universities, after all those years of study, still cannot spell 'friend,' I say to them that something's the matter with the way you spell friend.

If you have any talent, or any occupation that delights you, do it, and do it to the hilt. Don't ask why, or what difficulties you may get into.

The first principle is that you must not fool yourself and you are the easiest person to fool.

Don't think about what you want to be, but what you want to do. Keep up some kind of a minimum with other things so that society doesn't stop you from doing anything at all.

The same equations have the same solutions