John von Neumann

Mathematics Hungarian-American 1903 – 1957 175 quotes

Polymath who shaped computing, game theory, and quantum mechanics

Quotes by John von Neumann

If people do not believe that mathematics is simple, it is only because they do not realize how complicated life is.

Attributed

Any one who considers arithmetical methods of producing random digits is, of course, in a state of sin.

Various sources, often quoted in lectures 1951

The operating parts of the human nervous system are of a mixed character, partly digital, partly analog.

The Computer and the Brain 1958

The game is not to be played once, but many times.

Theory of Games and Economic Behavior 1944

Mathematics is not a science. It is a language.

Attributed

The problems of the world are not to be solved by the methods of physics.

Attributed

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.

Method in the Physical Sciences 1955

It would appear that we have reached the limits of what it is possible to achieve with computer technology, although one should be careful with such statements, as they tend to sound pretty silly in 5 years.

Attributed, often debated exact wording and date 1949

The present is the past of the future.

Attributed

The human brain has a certain finite capacity, and the human nervous system has a certain finite speed. The human memory is not infinite, and the human brain is not infinitely fast.

The Computer and the Brain 1958

The game theory is a mathematical theory of strategy, which is applicable to situations where the outcome depends on the choices of several players.

Theory of Games and Economic Behavior 1944

The world is not a simple place, and the problems of the world are not simple problems.

Attributed

The most important thing in science is not to get new facts, but to discover new ways of thinking about them.

Attributed

The problems of the world are not to be solved by the methods of physics, but by the methods of mathematics.

Attributed

The sciences do not try to explain, they hardly even try to interpret, they mainly make models.

Method in the Physical Sciences 1955

The human brain is a digital computer, but it is not a digital computer in the sense of a modern electronic computer.

The Computer and the Brain 1958

The game theory is a mathematical theory of strategy, which is applicable to situations where the outcome depends on the choices of several players, and where the players have conflicting interests.

Theory of Games and Economic Behavior 1944

The world is not a simple place, and the problems of the world are not simple problems. They are complex problems, and they require complex solutions.

Attributed

The most important thing in science is not to get new facts, but to discover new ways of thinking about them, and to discover new ways of organizing them.

Attributed

The problems of the world are not to be solved by the methods of physics, but by the methods of mathematics, and by the methods of logic.

Attributed