Charles Sanders Peirce (1839–1914) is recognized as the founder and originator of pragmatism, although his intellectual expertise extended to logic, mathematics, economics, social science, the physical sciences, and geodesic work. Peirce’s published writings date from 1857 until his death and constitute 12,000 printed pages. There are, in addition, 80,000 pages of his unpublished hand-written work. His principal works, published posthumously, are edited volumes, such as The New Elements of Mathematics (four volumes, 1976), The Essential Peirce (two volumes, 1992 and 1998), and Writings of Charles S. Peirce: A Chronological Edition (five volumes, 1882–1993).