The Commens Dictionary
Quote from ‘Prolegomena to an Apology for Pragmaticism’
The matter which the Graph-instances are to determine, and which thereby becomes the Quasi-mind in which the Graphist and Interpreter are at one, being a Seme of The Truth, that is, of the widest Universe of Reality, and at the same time, a Pheme of all that is tacitly taken for granted between the Graphist and Interpreter, from the outset of their discussion, shall be a sheet, called the Phemic Sheet, upon which signs can be scribed and from which any that are already scribed in any manner (even though they be incised) can be erased.
‘Sheet of Assertion’ (pub. 22.08.17-14:11). 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-prolegomena-apology-pragmaticism-37.