The Commens Dictionary
Quote from ‘The Basis of Pragmaticism’
…to say that one term, say u, is logically simpler than another, say w, means precisely that the affirmation of w concerning any subject implies the affirmative truth of u concerning the same subject, while the affirmation of u does not reciprocally imply the affirmative truth of w; and it may be remarked, by the way, that disquiparance is thus necessarily involved in logical simplicity: but we need not argue from that principle.
‘Logical Simplicity’ (pub. 14.08.17-09:25). 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-basis-pragmaticism-32.