The Collaborative International Dictionary of English v.0.48:

Philosopheme \Phi*los"o*pheme\, n. [Gr. filoso`fhma, from
   filosofei^n to love knowledge.]
   A philosophical proposition, doctrine, or principle of
   reasoning. [R.]
   [1913 Webster]

         This, the most venerable, and perhaps the most ancient,
         of Grecian myths, is a philosopheme.     --Coleridge.
   [1913 Webster]