If you optimize everything, you will always be unhappy.

Science is knowledge which we understand so well that we can teach it to a computer; and if we don't fully understand something, it is an art to deal with it.

The whole thing that makes a mathematician’s life worthwhile is that he gets the grudging admiration of three or four colleagues.

God is a challenge because there is no proof of his existence and therefore the search must continue.

Random numbers should not be generated with a method chosen at random

We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil. Yet we should not pass up our opportunities in that critical 3%

Programming is the art of telling another human being what one wants the computer to do.