The sciences do not try to explain, they hardly even try to interpret, they mainly make models. By a model is meant a mathematical construct which, with the addition of certain verbal interpretations, describes observed phenomena. The justification of such a mathematical construct is solely and precisely that it is expected to work-that is, correctly to describe phenomena from a reasonably wide area.

Any one who considers arithmetical methods of producing random digits is, of course, in a state of sin. For, as has been pointed out several times, there is no such thing as a random number - there are only methods to produce random numbers, and a strict arithmetic procedure of course is not such a method.

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.

I would like to make a confession which may seem immoral: I do not believe absolutely in Hilbert space any more.

I am thinking about something much more important than bombs. I am thinking about computers.

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

Life is a process which may be abstracted from other media.