Charles Sanders Peirce (1839-1914) is rapidly becoming recognized as the greatest American philosopher. At the center of his philosophy was a revolutionary model of the way human beings think. Peirce, a logician, challenged traditional models by describing thoughts not as "ideas" but as "signs," external to the self and without meaning unless interpreted by a subsequent thought. His general theory of signs -- or semiotic -- is especially pertinent to methodologies currently being debated in many disciplines.

This anthology, the first one-volume work devoted to Peirce's writings on...