The Commens Dictionary
Quote from ‘New Elements (Kaina stoiceia)’
A theorem, as I shall use the word, is an inference obtained by constructing a diagram according to a general precept, and after modifying it as ingenuity may dictate, observing in it certain relations, and showing that they must subsist in every case, retranslating the proposition into general terms.
‘Theorem’ (pub. 12.11.15-15:31). 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-new-elements-kaina-stoiceia-24.