The Commens Dictionary

Quote from ‘Peirce's Personal Interleaved Copy of the 'Century Dictionary' [Commens]’


Philosophy is that branch of positive science (i.e., an investigating theoretical science which inquires what is the fact, in contradistinction to pure mathematics which merely seeks to know what follows from certain hypotheses) which makes no observations but contents itself with so much of experience as pours in upon every man during every hour of his waking life. The study of philosophy consists, therefore, in reflexion…

1902 [c.]
CP 5.13 n.1
‘Philosophy’ (pub. 23.07.15-17:54). Quote in M. Bergman & S. Paavola (Eds.), The Commens Dictionary: Peirce's Terms in His Own Words. New Edition. Retrieved from
Jul 23, 2015, 17:54 by Mats Bergman
Last revised: 
Jul 23, 2015, 18:04 by Mats Bergman