The idea of a world commonweal has to be established as the criterion of political institutions, and also as the criterion of general conduct in hundreds of millions of brains. It has to dominate education everywhere in the world. When that end is achieved, then the world state will be achieved.

All men, however highly educated, retain some superstitious inklings.

You are trying to do a more difficult thing than record folk songs; you are trying to record life.

For all my desire to be interesting, I have to confess that for most things and people I don't give a damn.

But I was too restless to watch long; I'm too Occidental for a long vigil. I could work at a problem for years, but to wait inactive for twenty-four hours - that's another matter.

Let your love be stronger than your hate or anger. Learn the wisdom of compromise, for it is better to bend a little than to break.

If we don't end war, war will end us.