The Commens Dictionary
Quote from ‘A Suggested Classification of the Sciences’
Logic is the science of the classification of arguments. Reasoning is self-controlled thought; and thus Logic is directly dependent upon Ethics, or the science of self-control, in general.
MS [R] 1339:12
‘Logic’ (pub. 04.05.15-19:12). 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-suggested-classification-sciences-5.