From the service we have tried to make natural science render to our religion, we might be expected possibly to take up the position that the absolute contribution of Science to Revelation was very great. On the contrary, it is very small. The _absolute_ contribution, that is, is very small. The contribution on the whole is immense, vaster than we have yet any idea of. But without the aid of the higher Revelation this many-toned and far-reaching voice had been forever dumb. The light of Nature, say the most for it, is dim--how dim we ourselves, with the glare of other Light upon the modern world, can only realize when we seek among the pagan records of the past for the groupings after truth of those whose only light was this. Powerfully significant and touching as these efforts were in their success, they are far more significant and touching in their failure. For they did fail. It requires no philosophy now to speculate on the adequacy or inadequacy of the Religion of Nature. For us who could never weigh it rightly in the scales of Truth it has been tried in the balance of experience and found wanting. Theism is the easiest of all religions to get, but the most difficult to keep. Individuals have kept it, but nations never. Socrates and Aristotle, Cicero and Epictetus had a theistic religion; Greece and Rome had none. And even after getting what seems like a firm place in the minds of men, its unstable equilibrium sooner or later betrays itself. On the one hand theism has always fallen into the wildest polytheism, or on the other into the blankest atheism. "It is an indubitable historical fact that, outside of the sphere of special revelation, man has never obtained such a knowledge of God as a responsible and religious being plainly requires. The wisdom of the heathen world, at its very best, was utterly inadequate to the accomplishment of such a task as creating a due abhorrence of sin, controlling the passions, purifying the heart, and ennobling the conduct."[61]
What is the inference? That this poor rush-light by itself was never meant to lend the ray by which man should read the riddle of the universe. The mystery is too impenetrable and remote for its uncertain flicker to more than make the darkness deeper. What indeed if this were not a light at all, but only part of a light--the carbon point, the fragment of calcium, the reflector in the great Lantern which contains the Light of the World?
This is one inference. But the most important is that the absence of the true Light means moral Death. The darkness of the natural world to the intellect is not all. What history testifies to is, first the partial, and then the total eclipse of virtue that always follows the abandonment of belief in a personal God. It is not, as has been pointed out a hundred times, that morality in the abstract disappears, but the motive and sanction are gone. There is nothing to raise it from the dead. Man's attitude to it is left to himself. Grant that morals have their own base in human life; grant that Nature has a Religion whose creed is Science; there is yet nothing apart from God to save the world from moral Death. Morality has the power to dictate but none to move. Nature directs but cannot control. As was wisely expressed in one of many pregnant utterances during a recent _Symposium_, "Though the decay of religion may leave the institutes of morality intact, it drains off their inward power. The devout faith of men expresses and measures the intensity of their moral nature, and it cannot be lost without a remission of enthusiasm, and under this low pressure, the successful reentrance of importunate desires and clamorous passions which had been driven back. To believe in an ever-living and perfect Mind, supreme over the universe, is to invest moral distinctions with immensity and eternity, and lift them from the provincial stage of human society to the imperishable theater of all being. When planted thus in the very substance of things, they justify and support the ideal estimates of the conscience; they deepen every guilty shame; they guarantee every righteous hope; and they help the will with a Divine casting-vote in every balance of temptation."[62] That morality has a basis in human society, that Nature has a Religion, surely makes the Death of the soul when left to itself all the more appalling. It means that, between them, Nature and morality provide all for virtue--except the Life to live it.