You don't have to be responsible for the world that you're in.

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

The calculus was the first achievement of modern mathematics and it is difficult to overestimate its importance. I think it defines more unequivocally than anything else the inception of modern mathematics; and the system of mathematical analysis, which is its logical development, still constitutes the greatest technical advance in exact thinking.

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

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.

Computers are like humans - they do everything except think.

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