A professor is one who can speak on any subject - for precisely fifty minutes.

One of the chief duties of the mathematician in acting as an advisor ... is to discourage ... from expecting too much from mathematics.

A painter like Picasso, who runs through many periods and phases, ends up by saying all those things which are on the tip of the tongue of the age to say, and finally sterilizes the originality of his contemporaries and juniors.

There are no answers, only cross references.

If the human being is condemned and restricted to perform the same functions over and over again, he will not even be a good ant, not to mention a good human being.

Science is a way of life which can only flourish when men are free to have faith.

I have said that the modern man, and especially the modern American, however much 'know-how' he may have, has very little 'know-what'