Coincidence is what you have left over when you apply a bad theory.

The first business of a man of science is to proclaim the truth as he finds it, and let the world adjust itself as best it can to the new knowledge.

By far the most important consequence of the conceptual revolution brought about in physics by relativity and quantum theory lies not in such details as that meter sticks shorten when they move or that simultaneous position and momentum have no meaning, but in the insight that we had not been using our minds properly and that it is important to find out how to do so.

Nature does not count nor do integers occur in nature. Man made them all, integers and all the rest, Kronecker to the contrary notwithstanding.

Science is what scientists do, and there are as many scientific methods as there are individual scientists.

Coincidence is what you have left over when you apply a bad theory.

In general, we mean by any concept nothing more than a set of operations; the concept is synonymous with the corresponding set of operations.