But there is another reason for the high repute of mathematics: it is mathematics that offers the exact natural sciences a certain measure of security which, without mathematics, they could not attain.

To me it is enough to wonder at the secrets

I never teach my pupils, I only attempt to provide the conditions in which they can learn.

How vile and despicable war seems to me! I would rather be hacked to pieces than take part in such an abominable business.

Adversity introduces a man to himself.

You can move through life seeing nothing as a miracle, or seeing everything as a miracle.

It gives me great pleasure indeed to see the stubbornness of an incorrigible nonconformist warmly acclaimed.