The Commens Dictionary
Quote from ‘Miscellaneous Fragments [R]’
Semeiotics has three parts: Speculative Grammar, which studies the essential nature of the different kinds of signs; Critic, which studies the general conditions of their relations to their objects; and Methodeutic, which studies the general conditions of their fulfilling their purposes.
MS [R] S104
‘Speculative Grammar’ (pub. 27.08.15-00:26). 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-miscellaneous-fragments-r-2.