It is important to realize that in physics today, we have no knowledge of what energy is

I was born not knowing and have had only a little time to change that here and there.

Experiment is the sole judge of the validity of any idea.

A very great deal more truth can become known than can be proven.

It is scientific only to say what is more likely and what less likely, and not to be proving all the time the possible and impossible.

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.

The beauty that is there is also available for me, too. But I see a deeper beauty that isn't so readily available to others.... I don't see how studying a flower ever detracts from its beauty. It only adds