The Commens Dictionary
Quote from ‘The Art of Reasoning. Chapter II. What is a Sign?’
We think only in signs. These mental signs are of mixed nature; the symbol-parts of them are called concepts. If a man makes a new symbol, it is by thoughts involving concepts. So it is only out of symbols that a new symbol can grow.
‘Concept’ (pub. 04.03.16-16:56). 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-grand-logic-1893-art-reasoning-chapter-ii-what-sign-2.