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

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

There is no point in being precise if you do not even know what you are talking about.

By and large it is uniformly true in mathematics that there is a time lapse between a mathematical discovery and the moment when it is useful; and that this lapse of time can be anything from 30 to 100 years, in some cases even more; and that the whole system seems to function without any direction, without any reference to usefulness, and without any desire to do things which are useful.

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.

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

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