Charles Sanders Peirce (, like "purse", September 10, 1839 – April 19, 1914) was an
American philosopher,
logician,
mathematician, and
scientist who is sometimes known as "the father of
pragmatism". He was educated as a chemist and employed as a scientist for 30 years. Today he is appreciated largely for his contributions to logic, mathematics, philosophy, scientific methodology, and
semiotics, and for his founding of
pragmatism.