With unity and spirituality, _eternity_ makes a third. This norm is a fundamental attribute of the One God himself, and interchangeable with his ineffable name: the Lord is Eternal, and the Eternal, even more than the One, receives the eulogium of exclusive realness. To the philosophical tradition it is the most real. Once more the reason should be obvious. The underlying urge which pushes the mind to think the world as a unity pushes it even more inexorably to think the world as timeless. For unity is asserted only against the perplexities of a manyness which may be static and unchanging, and hence comparatively simple. But eternity is asserted and set against mutability: it is the negation of change, of time, of novelty, of the suddenness and slaughter of the flux of life itself, which consumes what it generates, undermines what it builds and sweeps to destruction what it founds to endure. Change is the arch-enemy of a life which struggles for self-_preservation_, of an intellect which operates spontaneously by the logic of identity, of a will which seeks to convert others into sames. It substitutes a different self for the old, it falsifies systems of thought and deteriorates systems of life. It makes unity impossible and manyness inevitable. It upsets every actual equilibrium that life attains. It opens the doors and windows of every closed and comfortable cosmos to all transcosmic winds that blow, with whatever they carry of possible danger and possible ill. It is the very soul of chaos in which the pleasant, ordered world is such a little helpless thing. Of this change eternity is by primary intention the negation, as its philological form shows. It is _not-time_, without positive intrinsic content, and in its secondary significances, i.e., in those significances which appear in metaphysical dialectic, without meaning; since it is there a pure negation, intrinsically affirming nothing, of the same character as "not-man" or "not-donkey," standing for a nature altogether unspecific and indeterminable in the residual universe. By a sort of obverse implication it does, however, possess, in the philosophic tradition, a positive content which accrues to it by virtue of what it denies. This content makes it a designation for the persistence and perdurability of desiderated quality--from metaphysical unity and spirituality to the happy hunting-grounds or a woman's affection. At bottom it means the assurance that the contents of value cannot and will not be altered or destroyed, that their natures and their relations to man do not undergo change. There is no recorded attempt to prove that evil is eternal: eternity is _eternity of the good alone_.