The Commens Dictionary
Quote from ‘Short Logic: Chapter I. Of Reasoning in General’
The sciences of speculative grammar, logic, and speculative rhetoric may be called the philosophical trivium.
‘Logic [in the narrow sense]’ (pub. 31.01.13-20:10). 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-short-logic-1.