The stranger is close to us, insofar as we feel between him and ourselves common features of a national, social, occupational, or generally human, nature. He is far from us, insofar as these common features extend beyond him or us, and connect us only because they connect a great many people.

The advancement of mathematics is through generalization.

A dreamer is one who can only find his way by moonlight, and his punishment is that he sees the dawn before the rest of the world.

Leadership means making tough decisions today for a better tomorrow.