Each generation has its few great mathematicians, and mathematics would not even notice the absence of the others. They are useful as teachers, and their research harms no one, but it is of no importance at all. A mathematician is great or he is nothing.

All failures - neurotics, psychotics, criminals, drunkards, problem children, suicides, perverts, and prostitutes - are failures because they are lacking in social interest

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.

Men of genius are admired, men of wealth are envied, men of power are feared; but only men of character are trusted.

Follow your heart always, and remember to take your head along with you.

In the company of friends, writers can discuss their books, economists the state of the economy, lawyers their latest cases, and businessmen their latest acquisitions, but mathematicians cannot discuss their mathematics at all. And the more profound their work, the less understandable it is.

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