Now, on this point I believe we may answer fearlessly: If you cannot see it we cannot help you. If the heavens do not declare to you the glory of God, nor the firmament show you His handy-work, then our poor arguments about them will not show it. “The eye can only see that which it brings with it the power of seeing.” We can only reassert that we see design everywhere, and that the vast majority of the human race in every age and clime has seen it. Analogy from experience, sound induction (as we hold) from the works not only of men but of animals, has made it an all but self-evident truth to us, that wherever there is arrangement, there must be an arranger; wherever there is adaptation of means to an end, there must be an adapter; wherever an organisation, there must be an organiser. The existence of a designing God is no more demonstrable from Nature than the existence of other human beings independent of ourselves, or, indeed, the existence of our own bodies. But, like the belief in them, the belief in Him has become an article of our common sense. And that this designing mind is, in some respects, similar to the human mind, is proved to us (as Sir John Herschel well puts it) by the mere fact that we can discover and comprehend the processes of Nature.
But here again, if we be contradicted, we can only reassert. If the old words, “He that made the eye, shall He not see? He that planted the ear, shall He not hear?” do not at once commend themselves to the intellect of any person, we shall never convince that person by any arguments drawn from the absurdity of conceiving the invention of optics by a blind race, or of music by a deaf one.
So we will assert our own old-fashioned notion boldly; and more: we will say, in spite of ridicule, that if such a God exists, final causes must exist also. That the whole universe must be one chain of final causes. That if there be a Supreme Reason, He must have a reason, and that a good reason, for every physical phenomenon.
We will tell the modern scientific man—You are nervously afraid of the mention of final causes. You quote against them Bacon’s saying, that they are barren virgins; that no physical fact was ever discovered or explained by them. You are right as far as regards yourselves; you have no business with final causes, because final causes are moral causes, and you are physical students only. We, the natural theologians, have business with them. Your duty is to find out the How of things; ours, to find out the Why. If you rejoin that we shall never find out the Why, unless we first learn something of the How, we shall not deny that. It may be most useful, I had almost said necessary, that the clergy should have some scientific training. It may be most useful, I sometimes dream of a day when it will be considered necessary, that every candidate for ordination should be required to have passed creditably in at least one branch of physical science, if it be only to teach him the method of sound scientific thought. But our having learnt the How, will not make it needless, much less impossible, for us to study the Why. It will merely make more clear to us the things of which we have to study the Why; and enable us to keep the How and the Why more religiously apart from each other.