We are boxed in by the boundary conditions of our thinking

In the matter of physics, the first lessons should contain nothing but what is experimental and interesting to see. A pretty experiment is in itself often more valuable than twenty formulae extracted from our minds.

There is no salvation for civilization, or even the human race, other than the creation of a world government.

Scientists investigate that which already is; Engineers create that which has never been.

Let every man judge according to his own standards, by what he has himself read, not by what others tell him.

You can't solve problems with the same thinking that caused them.

If [quantum theory] is correct, it signifies the end of physics as a science.