If the West can claim superiority in anything, it is . . . in science and scientific technique.

Laughter is the most inexpensive and most effective wonder drug. Laughter is a universal medicine.

A democrat need not believe that the majority will always reach a wise decision. He should however believe in the necessity of accepting the decision of the majority, be it wise or unwise, until such a time that the majority reaches another decision.

Do not feel certain of anything.

It seems to me now that mathematics is capable of an artistic excellence as great as that of any music, perhaps greater; not because the pleasure it gives (although very pure) is comparable, either in intensity or in the number of people who feel it, to that of music, but because it gives in absolute perfection that combination, characteristic of great art, of godlike freedom, with the sense of inevitable destiny; because, in fact, it constructs an ideal world where everything is perfect and yet true.

I do not believe that I am now dreaming, but I cannot prove that I am not.

Unrestricted nationalism is, in the long run, incompatible with world peace.