IT HAS BEEN characteristic of metaphysics, since the beginning of philosophy, to deny the reality of time. The characteristics ascribed to it by unreflective people, particularly that of passage, have seemed so puzzling and paradoxical that the metaphysical temperament has preferred to banish time altogether rather than embrace those paradoxes. Thus Parmenides, the earliest metaphysician, denied reality to all time and becoming, leaving his bleak and changeless conception of reality to be perfected by his pupil Zeno. Plato, too, declared that (...) reality can only be the eternal, describing the strange passage of time in which we mortals live as nothing but that eternity's moving image. Among modern philosophers Spinoza sounded the same note, being unable to think of any reality in which time, by itself, could make a difference, while Immanuel Kant reduced it to a mere form of sensibility. Among recent thinkers McTaggart comes at once to mind, with his proofs that the concept of time is simply self-contradictory. (shrink)