Published on *Commens* (http://www.commens.org)

‘Sheet of Assertion’ (pub. 13.01.15-14:11). Quote in M. Bergman & S. Paavola (Eds.), *The Commens Dictionary: Peirce's Terms in His Own Words. New Edition*. Retrieved from http://www.commens.org/dictionary/entry/quote-logical-tracts-no-2-existential-graphs-eulers-diagrams-and-logical-algebra-19.

Term:

Sheet of Assertion

Quote:

A certain sheet, called the *sheet of assertion*, is appropriated to the drawing upon it of such graphs that whatever may be at any time drawn upon it, called the *entire graph*, shall be regarded as expressing an assertion by an imaginary person, called the *graphist*, concerning a universe, perfectly definite and entirely determinate, but the arbitrary creation of an imaginary mind, called the *grapheus*.

Source:

Peirce, C. S. (1903 [c.]). *Logical Tracts. No. 2. On Existential Graphs, Euler's Diagrams, and Logical Algebra*. MS [R] 492.

References:

CP 4.432

Date of Quote:

1903 [c.]

URL:

http://www.commens.org/dictionary/entry/quote-logical-tracts-no-2-existential-graphs-eulers-diagrams-and-logical-algebra-19