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Commens
Digital Companion to C. S. Peirce
‘Second Intention’ (pub. 25.08.15-22:36). 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-logical-graphs-3.
Term: 
Second Intention
Quote: 

Characters of second intention are characters which are brought to our knowledge, not by observation of their subjects, but by observation of logical forms. Relatives of second intention are of high importance in logic, as might be anticipated. Especially so are those which express the numbers of collections. All such arithmetical relatives are expressible in terms of three fundamental arithmetical relatives, a monad, a dyad, and a triad.

Without these the most elementary requisites of logic cannot be fulfilled.

Source: 
Peirce, C. S. (1896-98 [c.]). On Logical Graphs. MS [R] 482.
References: 
MS [R] 482:13
Date of Quote: 
1896-98 [c.]
URL: 

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