The true meaning of a term is to be found by observing what a man does with it, not by what he says about it.

- Percy Williams Bridgman

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

- Percy Williams Bridgman

If a specific question has meaning, it must be possible to find operations by which an answer may be given to it ... I believe that many of the quest…

- Percy Williams Bridgman

By far the most important consequence of the conceptual revolution brought about in physics by relativity and quantum theory lies not in such details…

- Percy Williams Bridgman

It is the merest truism, evident at once to unsophisticated observation, that mathematics is a human invention.

- Percy Williams Bridgman

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

- Percy Williams Bridgman

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

- Percy Williams Bridgman

To find the length of an object, we have to perform certain physical operations. The concept of length is therefore fixed when the operations by whic…

- Percy Williams Bridgman

It seems to me that there is a good deal of ballyhoo about scientific method. I venture to think that the people who talk most about it are the peopl…

- Percy Williams Bridgman