Now the habit of regarding the past as effete and as merely a stepping-stone to something present or future, is unfavourable to any true apprehension of that element in the past which was vital and which remains eternal. It is a habit of thought that destroys the sense of the moral identity of all ages, by virtue of its very insistence on the mechanical derivation of one age from another. Existences that cause one another exclude one another; each is alien to the rest inasmuch as it is the product of new and different conditions. Ideas that cause nothing unite all things by giving them a common point of reference and a single standard of value. The classic and the Christian systems were both systems of ideas, attempts to seize the eternal morphology of reality and describe its unchanging constitution. The imagination was summoned thereby to contemplate the highest objects, and the essence of things being thus described, their insignificant variations could retain little importance and the study of these variations might well seem superficial. Mechanical science, the science of causes, was accordingly neglected, while the science of values, with the arts that express these values, was exclusively pursued. The reverse has now occurred and the spirit of life, innocent of any rationalizing discipline and deprived of an authoritative and adequate method of expression, has relapsed into miscellaneous and shallow exuberance. Religion and art have become short-winded. They have forgotten the old maxim that we should copy in order to be copied and remember in order to be remembered. It is true that the multiplicity of these incompetent efforts seems to many a compensation for their ill success, or even a ground for asserting their absolute superiority. Incompetence, when it flatters the passions, can always find a greater incompetence to approve of it. Indeed, some people would have regarded the Tower of Babel as the best academy of eloquence on account of the variety of oratorical methods prevailing there.