"Truth is not always the most comforting thing, but it is the most necessary."

The most important political distinction among countries concerns not their form of government but their degree of government.

A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between proofs and the best mathematician can notice analogies between theories.

当一个人已经腐化而侮辱了他思想的纯洁，从而宣扬他自己不相信的东西，他已经准备好犯其他任何的罪行。