We have had during the last few centuries a series of extremely simple religions; each indeed trying to be more simple than the last. And the manifest mark of all these simplifications was, not only that they were finally sterile, but that they were very rapidly stale. A man had said the last word about them when he had said the first. Atheism is, I suppose, the supreme example of a simple faith. The man says there is no God; if he really says it in his heart, he is a certain sort of man so designated in Scripture. But, anyhow, when he has said it, he has said it; and there seems to be no more to be said. The conversation seems likely to languish. The truth is that the atmosphere of excitement, by which the atheist lived, was an atmosphere of thrilled and shuddering theism, and not of atheism at all; it was an atmosphere of defiance and not of denial. Irreverence is a very servile parasite of reverence; and has starved with its starving lord. After this first fuss about the merely aesthetic effect of blasphemy, the whole thing vanishes into its own void. If there were not God, there would be no atheists. It is easy to say this of the nineteenth century negation, for that sort of atheism is already one of the dead heresies. But what is not always noticed is that all the more modern forms of theism have the same blank. Theism is as negative as atheism. To say with the optimists that God is good, and therefore everything is good; or with the universalists that God is Love, and therefore everything is love; or with the Christian Scientists that God is Spirit, and therefore everything is Spirit; or, for that matter, with the pessimists that God is cruel, and therefore everything is a beastly shame; to say any of these things is to make a remark to which it is difficult to make any reply, except “Oh;” or possibly, in a rather feeble fashion, “Well, well.” The statement is certainly, in one sense, very complete; possibly a little too complete; and we find ourselves wishing it were a little more complex. And that is exactly the point. It is not complex enough to be a living organism. It has no vitality because it has no variety of function.
One broad characteristic belongs to all the schools of thought that are called broad-minded; and that is that their eloquence ends in a sort of silence not very far removed from sleep. One mark distinguishes all the wild innovations and insurrections of modern intellectualism; one note is apparent in all the new and revolutionary religions that have recently swept the world; and that note is dullness. They are too simple to be true. And, meanwhile, any one Catholic peasant, while holding one small bead of the rosary in his fingers, can be conscious, not of one eternity, but of a complex and almost a conflict of eternities; as, for example, in the relations of Our Lord and Our Lady, of the fatherhood and the childhood of God, of the motherhood and the childhood of Mary. Thoughts of that kind have, in a supernatural sense, something analogous to sex; they breed. They are fruitful and multiply; and there is no end to them. They have innumerable aspects; but that aspect that concerns the argument here is this, that a religion which is rich in this sense always has a number of ideas in reserve. Besides the ideas that are being applied to a particular problem or a particular period, there are a number of rich fields of thought which are, in that sense, lying fallow. Where a new theory, invented to meet a new problem, rapidly perishes with that problem, the old things are always waiting for other problems when they shall, in their turn, become new. A new Catholic movement is generally a movement to emphasize some Catholic idea that was only neglected in the sense that it was not till then specially needed; but when it is needed, nothing else can meet the need. In other words, the only way really to meet all the human needs of the future is to pass into the possession of all the Catholic thoughts of the past; and the only way to do that is really to become a Catholic.
– Where All Roads Lead (1922)