The Commens Dictionary

Quote from ‘Minute Logic: Chapter II. Section II. Why Study Logic? ’


Now a person cannot perform the least reasoning without some general ideal of good reasoning; for reasoning involves deliberate approval of one’s reasoning; and approval cannot be deliberate unless it is based upon the comparison of the thing approved with some idea of how such a thing ought to appear. Every reasoner, then, has some general idea of what good reasoning is. This constitutes a theory of logic: the scholastics called it the reasoner’s logica utens. Every reasoner whose attention has been considerably drawn to his inner life must soon become aware of this.

CP 2.186
‘Logica Utens’ (pub. 01.02.13-18:11). Quote in M. Bergman & S. Paavola (Eds.), The Commens Dictionary: Peirce's Terms in His Own Words. New Edition. Retrieved from
Feb 01, 2013, 18:11 by Sami Paavola
Last revised: 
Jan 07, 2014, 01:00 by Commens Admin