Charles Sanders Peirce (1839–1914)
Born 1839 CE, died 1914 CE.
Charles Sanders Peirce ( PURSE; September 10, 1839 – April 19, 1914) was an American scientist, mathematician, logician, and philosopher who is sometimes known as "the father of pragmatism". According to philosopher Paul Weiss, writing in 1934, Peirce was "the most original and versatile of America's philosophers and America's greatest logician". Bertrand Russell wrote in 1959, "he was one of the most original minds of the later nineteenth century and certainly the greatest American thinker ever". Educated as a chemist and employed as a scientist for thirty years, Peirce made major contributions to logic, such as theories of relations and quantification. C. I. Lewis wrote, "The contributions of C. S. Peirce to symbolic logic are more numerous and varied than those of any other writer—at least in the nineteenth century." For Peirce, logic also encompassed much of what is now called epistemology and the philosophy of science. He saw logic as the formal branch of semiotics or study of signs, of which he is a founder, which foreshadowed the debate among logical positivists and proponents of philosophy of language that dominated 20th-century Western philosophy.
Text from the Wikipedia article Charles_Sanders_Peirce, licensed CC BY-SA 4.0.