It was a great thing to be a human being. It was something tremendous. Suddenly I'm conscious of a million sensations buzzing in me like bees in a hive. Gentlemen, it was a great thing.

Nothing is stranger to man than his own image.

Robots of the world, you are ordered to exterminate the human race. Do not spare the men. Do not spare the women. Preserve only the factories, railroads, machines, mines, and raw materials. Destroy everything else. Then return to work. Work must not cease.

Relativism is neither a method of fighting, nor a method of creating, for both of these are uncompromising and at times even ruthless; rather, it is a method of cognition.

Only years of practice will teach you the mysteries and bold certainty of a real gardener, who treads at random, yet tramples on nothing.

Quite obviously a cat trusts human beings; but she doesn't trust another cat because she knows better than we do.

You never realize a dog is a man's best friend until you start betting on horses.