Overview
Charles Sanders Peirce (1839–1914) was an American logician, scientist, and founder of pragmatism (which he later renamed pragmaticism). Employed irregularly by the Coast Survey and in brief academic posts, he wrote vast unpublished manuscripts. He developed semiotics, abductive inference, and a fallibilist philosophy of science. Handbook dates: 1839–1914. Poverty marked his later years despite seminal influence.
Main ideas
The pragmatic maxim clarifies meaning by conceivable practical bearings of a conception. Inquiry is a self-correcting community process aiming at truth as the ideal end of investigation. Abduction, deduction, and induction form a cycle of hypothesis and test. Signs are icons, indices, and symbols in a triadic semiotics. Synechism and tychism affirm continuity and real chance in nature. Categories of Firstness, Secondness, and Thirdness structure phenomenology and metaphysics.
Major works
- Collected Papers
- Illustrations of the Logic of Science essays
- Syllabus of Certain Topics of Logic
- Writings on existential graphs
Legacy
Peirce underpins pragmatism, modern semiotics, and philosophies of science emphasizing fallibilism. James and Dewey popularized related themes he often disputed in detail. Formal logic and AI-era semiotics still mine his archives.