The Commens Dictionary
Quote from ‘Letters to William James’
I start by defining what I mean by a Sign. It is something determined by something else, its Object, and itself influencing some person in such a way that that person becomes thereby mediately influenced or determined in some respect by that Object.
‘Sign’ (pub. 20.09.17-15:48). 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-letters-william-james-30.