The value of a college education is not the learning of many facts but the training of the mind to think

The best that Gauss has given us was likewise an exclusive production. If he had not created his geometry of surfaces, which served Riemann as a basis, it is scarcely conceivable that anyone else would have discovered it. I do not hesitate to confess that to a certain extent a similar pleasure may be found by absorbing ourselves in questions of pure geometry.

Nationalism is an infantile disease. It is the measles of mankind.

In their struggle for the ethical good, teachers of religion must have the stature to give up the doctrine of a personal god.

Newton did not know what happened to the apple, and I can prove this when the next eclipse comes.

Everyone should be respected as an individual, but no one idolized.

Knowledge is realizing that the street is one way; wisdom is looking in both directions anyway.