There is no thing as a man who does not create mathematics and yet is a fine mathematics teacher. Textbooks, course material-these do not approach in importance the communication of what mathematics is really about, of where it is going, and of where it currently stands with respect to the specific branch of it being taught. What really matters is the communication of the spirit of mathematics. It is a spirit that is active rather than contemplative-a spirit of disciplined search for adventures of the intellect. Only as adventurer can really tell of adventures.

To be human means to feel inferior.

seeing with the eyes of another, listening with the ears of another, and feeling with the heart of another.

My difficulties belong to me!

It is the patriotic duty of every man to lie for his country.

Distorted history boasts of bellicose glory... and seduces the souls of boys to seek mystical bliss in bloodshed and in battles.

There is a law that man should love his neighbor as himself. In a few hundred years it should be as natural to mankind as breathing or the upright gait; but if he does not learn it he must perish.