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Pragmatism is a philosophical tradition centered on the linking of practice and theory. It describes a process where theory is extracted from practice, and applied back to practice to form what is called intelligent practice.[citation needed] Important positions characteristic of pragmatism include instrumentalism, radical empiricism, verificationism, conceptual relativity, and fallibilism.[citation needed] There is general consensus among pragmatists that philosophy should take the methods and insights of modern science into account. Charles Sanders Peirce (and his pragmatic maxim) deserves most of the credit for pragmatism, along with later twentieth century contributors, William James and John Dewey.
Pragmatism enjoyed renewed attention after W. V. O. Quine and Wilfrid Sellars used a revised pragmatism to criticize logical positivism in the 1960s. Another brand of pragmatism, known sometimes as neopragmatism, gained influence through Richard Rorty, the most influential of the late twentieth century pragmatists. Contemporary pragmatism may be broadly divided into a strict analytic tradition and a "neo-classical" pragmatism (such as Susan Haack) that adheres to the work of Peirce, James, and Dewey. The word pragmatism derives from Greek πρ?γμα (pragma), "deed, act", which comes from πρ?σσω (prass?), "to pass over, to practise, to achieve".

http://en.wikipedia.org/wiki/Pragmatism