The world thus appears as a complicated tissue of events, in which connections of different kinds alternate or overlap or combine and thereby determine the texture of the whole.

Nature is made in such a way as to be able to be understood. Or perhaps I should put it-more correctly-the other way around, and say that we are made in such a way as to be able to understand Nature.

An expert is someone who knows some of the worst mistakes that can be made in his subject and how to avoid them.

Not only is the Universe stranger than we think, it is stranger than we can think.

Thus, the more precisely the position is determined, the less precisely the momentum is known, and conversely.

The violent reaction on the recent development of modern physics can only be understood when one realises that here the foundations of physics have started moving; and that this motion has caused the feeling that the ground would be cut from science

Every word or concept, clear as it may seem to be, has only a limited range of applicability.