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

This is a do-it-yourself test for paranoia: you know you've got it when you can't think of anything that's your fault.

Education can be dangerous. It is very difficult to make it not dangerous. In fact, it is almost impossible.

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

A world community can exist only with world communication, which means something more than extensive short-wave facilities scattered; about the globe. It means common understanding, a common tradition, common ideas, and common ideals.

It has been said that we have not had the three R's in America, we had the six R's; remedial readin', remedial 'ritin' and remedial 'rithmetic.

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