There is a computer disease that anybody who works with computers knows about. It's a very serious disease and it interferes completely with the work. The trouble with computers is that you 'play' with them!

In physics the truth is rarely perfectly clear, and that is certainly universally the case in human affairs. Hence, what is not surrounded by uncertainty cannot be the truth.

Listen, I mean that from my knowledge of the world that I see around me, I think that it is much more likely that the reports of flying saucers are the results of the known irrational characteristics of terrestrial intelligence than of the unknown rational efforts of extra-terrestrial intelligence.

Agnostic for me would be trying to weasel out and sound a little nicer than I am about this.

A great deal more is known than has been proved.

In fact the total amount that a physicist knows is very little. He has only to remember the rules to get him from one place to another and he is all right.

There is enough energy in a single cubic meter of space to boil all the oceans in the world.