Scratch the Christian and you find the pagan - spoiled.

No Jew was ever fool enough to turn Christian unless he was a clever man.

Selfishness is the only real atheism.

What clinical lectures I will give in heaven, demonstrating the ignorance of doctors!

The Past: Our cradle, not our prison; there is danger as well as appeal in its glamour. The past is for inspiration, not imitation, for continuation, not repetition.

No, the real American has not yet arrived. He is only in the Crucible, I tell you - he will be the fusion of all races, perhaps the coming superman.

[T]he German censorship forbade or mutilated my every book, which was like sticking pins into my soul.