The history of mankind is a perennial tragedy; for the highest ideals which the individual may project are ideals which he can never realize in social and collective terms.

I know that the Communists are atheistic and godless, but I don't think that that's what's primarily the matter with them. What's primarily the matter with them is that they worship a false god. That's much more dangerous than when people don't believe anything; they may be confused, they may not have a sense of the meaning of life, but they're not dangerous.

Nothing that is worth doing can be achieved in a lifetime; therefore we must be saved by hope.

It is my strong conviction that a realist conception of human nature should be made a servant of an ethic of progressive justice and should not be made into a bastion of conservatism, particularly a conservatism which defends unjust privileges.

We judge the Russians because they're living under despotism and we don't like it, but we've gotten into a fix now where we're living in a common predicament, and we ought to recognize this common predicament.

Great talents have some admirers, but few friends.

Love is the motive, but justice is the instrument.