To live in a state of doubt is a highly civilized attitude as regards the infinite potentialities and future constructions of science in its deciphering of phenomena. But to live in a state of doubt as regards, not phenomena, but the ultimate realities the knowledge of which is a natural possibility, privilege, and duty for human intelligence, is to live more miserably than animals, which at least tend with instinctive and buoyant certitude toward the ends of their ephemeral life.
--Jacques Maritain, Education at the Crossroads
