I would like to make a confession which may seem immoral: I do not believe absolutely in Hilbert space any more.
John von NeumannTechnological possibilities are irresistible to man. If man can go to the moon, he will. If he can control the climate, he will.
John von NeumannThe 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.
John von Neumann