Science, as well as technology, will in the near and in the farther future increasingly turn from problems of intensity, substance, and energy, to problems of structure, organization, information, and control.

Young man, in mathematics you don't understand things. You just get used to them.

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

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

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

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

Neumann, to a physicist seeking help with a difficult problem: Simple. This can be solved by using the method of characteristics. Physicist: I'm afraid I don't understand the method of characteristics. Neumann: In mathematics you don't understand things. You just get used to them.