
 Charles Peirce 
  Charles Sanders Peirce (18391914) is generally regarded as the founder of philosophical pragmatism, and, with Saussure, of modern semeiotic, and also as one of the founders of mathematical or symbolic logic. 
  Peirce's writings are pervaded by triadic divisions, which, given that he felt himself to be at heart a mathematician, he expressed most basically in numerical form as Firstness, Secondness, and Thirdness. 
  In Peirce's evolutionary cosmology, Thirdness, or triadic relation, or semeiosis, is considered to be a fact of the universe and not simply limited to the human mind, and therein lies the difference between Peirce and Kant, and between Peirce and much of modern linguistics and language theory. 
 www.nd.edu /~ehalton/Peirce.htm (662 words) 
