A student can win twelve letters at a university without learning how to write one.

Too few have the courage of my convictions.

Mathematics ... is indispensable as an intellectual technique. In many subjects, to think at all is to think like a mathematician.

...the fullest development of the highest powers of men can be achieved only in a world of peace.

Freedom of inquiry, freedom of discussion, and freedom of teaching - without these a university cannot exist.

The most distressing aspect of the world into which you are going is its indifference to the basic issues, which now, as always, are moral issues.

Nobody can decide for himself whether he is going to be a human being. The only question open to him is whether he will be an ignorant undeveloped one or one who has sought to reach the highest point he is capable of attaining.