Kurt Godel's achievement in modern logic is singular and monumental - indeed it is more than a monument, it is a landmark which will remain visible far in space and time. ... The subject of logic has certainly completely changed its nature and possibilities with Godel's achievement.

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

Anyone who attempts to generate random numbers by deterministic means is, of course, living in a state of sin.

You don't have to be responsible for the world that you're in.

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.

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

You wake me up early in the morning to tell me I am right? Please wait until I am wrong.