Young man, in mathematics you don't understand things. You just get used to them.

Technological possibilities are irresistible to man. If man can go to the moon, he will. If he can control the climate, he will.

You insist that there is something a machine cannot do. If you tell me precisely what it is a machine cannot do, then I can always make a machine which will do just that.

Problems are often stated in vague terms... because it is quite uncertain what the problems really are.

It is just as foolish to complain that people are selfish and treacherous as it is to complain that the magnetic field does not increase unless the electric field has a curl. Both are laws of nature.

There is no point in being precise if you do not even know what you are talking about.

There's no sense in being precise when you don't even know what you're talking about.