There is only one justification for universities, as distinguished from trade schools. They must be centers of criticism.

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

The college graduate is presented with a sheepskin to cover his intellectual nakedness.

To solve a problem it is necessary to think. It is necessary to think even to decide what facts to collect.

Anybody who feels at ease in the world today is a fool.

We call Japanese soldiers fanatics when they die rather than surrender, whereas American soldiers who do the same thing are called heroes.

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