The following article by Ernst Schröder originally appeared in The Monist, vol. 9, 1899. This copy was extracted from a book digitized by Google. The word pasigraphy, derived from Greek pasi [for all] and graphô [write], was a proposed term for a universal written scientific language. The resulting language, based on work by Boole, DeMorgan, Peirce, Schröder, and Peano, evolved into the modern versions of symbolic logic. Note that Schröder mentioned Frege, but he and Peano had a low opinion of Frege’s notation. Whitehead and Russell attended the congress held in Paris in 1900, and they adopted Peano’s modifications to Peirce-Schröder notation for their three-volume Principia Mathematica.

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