There are some who become spies for money, or out of vanity and megalomania, or out of ambition, or out of a desire for thrills. But the malady of our time is of those who become spies out of idealism.

The way to prevent war is to bend every energy toward preventing it, not to proceed by the dubious indirection of preparing for it.

Do not confuse your vested interests with ethics. Do not identify the enemies of your privilege with the enemies of humanity.

The Russians train; they do not dare educate.

Of the many things we have done to democracy in the past, the worst has been the indignity of taking it for granted.

I am neither an optimist nor pessimist, but a possibilist.

The real sadness of fifty is not that you change so much but that you change so little.