A philosophy can and must be worked out with the greatest rigour and discipline in the details, but can ultimately be founded on nothing but faith: and this is the reason, I suspect, why the novelties in philosophy are only in elaboration, and never in fundamentals.
T.S. (Thomas Stearns) Eliot (1888–1965), U.S.-British modernist poet. Eliot's doctoral dissertation in philosophy; submitted to Harvard in 1916. Knowledge and Experience in the Philosophy of F.H. Bradley, ch. 7, Columbia University Press (1964).