I learned very early the difference between knowing the name of something and knowing something.

The thing that doesn't fit is the thing that is most interesting.

One of the ways of stopping science would be only to do experiments in the region where you know the law. But experimenters search most diligently, and with the greatest effort, in exactly those places where it seems most likely that we can prove our theories wrong. In other words, we are trying to prove ourselves wrong as quickly as possible, because only in that way can we find progress.

A great deal more is known than has been proved.

It is surprising that people do not believe that there is imagination in science. It is a very interesting kind of imagination, unlike that of the artist. The great difficulty is in trying to imagine something that you have never seen, that is consistent in every detail with what has already been seen, and that is different from what has been thought of; furthermore, it must be definite and not a vague proposition. That is indeed difficult.

If you don't like it, go somewhere else, to another universe where the rules are simpler.

There is no harm in doubt and skepticism, for it is through these that new discoveries are made.