You may be sure that when a man begins to call himself a realist he is preparing to do something that he is secretly ashamed of doing.

Nuclear war is inevitable, says the pessimists; Nuclear war is impossible, says the optimists; Nuclear war is inevitable unless we make it impossible, says the realists.

Knowledge fills a large brain; it merely inflates a small one.

If a small thing has the power to make you angry, does that not indicate something about your size?

Skepticism is not an end in itself; it is a tool for the discovery of truths.

Many married couples separate because they quarrel incessantly, but just as many separate because they were never honest enough or courageous enough to quarrel when they should have.

Time is love, above all else. It is the most precious commodity in the world and should be lavished on those we care most about.