Page:The Story of Philosophy.pdf/441

 with "a love of adulation such as would be despised in a human being." Let science cease to deny deity, or to take materialism for granted. Mind and matter are, equally, relative phenomena, the double effect of an ultimate cause whose nature must remain unknown. The recognition of this Inscrutable Power is the core of truth in every religion, and the beginning of all philosophy.

Having indicated the unknowable, philosophy surrenders it, and turns its face to what can be known. Metaphysics is a mirage: as Michelet put it, it is "the art of befuddling one's self methodically." The proper field and function of philosophy lies in the summation and unification of the results of science. "Knowledge of the lowest kind is un-unified knowledge; science is partially-unified knowledge; philosophy is completely-unified knowledge." Such complete unification requires a broad and universal principle that will include all experience, and will describe the essential features of all knowledge. Is there a principle of this kind?

We may perhaps approach such a principle by trying to unify the highest generalizations of physics. These are the indestructibility of matter, the conservation of energy, the continuity of motion, the persistence of relations among forces (i.e., the inviolability of natural law), the transformability and equivalence of forces (even of mental and physical forces), and the rhythm of motion. This last generalization, not usually recognized, needs only to be pointed out. All nature is rhythmical, from the pulsations of heat to the vibrations of violin strings; from the undulations of light, heat and sound to the tides of the sea; from the periodicities of sex to the periodicities of planets and comets and stars; from the alternation of night and day to the succession of the seasons,