But there is this difference between the evolution of nature and the evolution of the science of nature. The evolution of nature results in the existence of forms which did not exist before; the evolution of knowledge results in the perception of laws which were already in existence.
The knowledge grows, but the things known remain. The knowledge is not treated as if independent of the things known or believed to be known, as a phenomenon belonging merely to the human mind, with beginnings and laws and consequences and history of its own. And, consequently, its having a regular growth is not used as an argument against its substantial truth.
The Science of Mathematics, for instance, has a history; but no mathematician will admit that the fact that it has a history affects its claims to acceptance as truth. We may ask, how men have been brought to believe the deductions of the higher mathematics, and we may answer our own question by tracing the steps; but our conviction is not shaken that these deductions are true.
And so, too, we can trace the steps by which the great generalisations of Science have been reached, and we may show that Kepler grew out of Copernicus, and Newton out of Kepler; but the proof that the knowledge of one truth has been evolved out of the knowledge of another, and that out of the knowledge of another, is not used to show that all this Science has nothing to do with truth at all, but is only a natural growth of human thought. Science has grown through all manner of mistakes—mistakes made by the greatest thinkers and observers, mistakes which men ignorantly laugh at now, as their own mistakes will be no doubt laughed at in turn hereafter. But we do not, therefore, treat scientific thought as nothing more than one of the phenomena of humanity; ways of thinking which necessarily grew out of the conditions in which men have existed, but sufficiently accounted for by their origin and mode of growth having been shown, and having no solidity of their own.
What has been said of Science may be said also of Religion. Religion also has had its development, and in some respects a development parallel to that of Science.
It is possible to trace the steps by which men have obtained an ever larger and fuller knowledge of the Supreme Law of Right, a clearer perception of its application, of its logical results, of its relation to life, to conduct, to belief. It has grown through mistakes as Science has. There has been false Religion, as there has been false Science. Unsound principles of conduct have been inculcated in Religion as unsound generalisations have been set up in Science. There have been improper objects of reverence in Religion, as there have been impossible aims proposed for scientific investigation. Ezekiel rises above the doctrine that the children are punished for the sins of their parents, just as Galileo rises above the doctrine that nature abhors a vacuum. The parallel is all the more complete in that in many cases false religions have been also false sciences. The prayer to the fetish for rain is as contrary to true religion as it is contrary to true science. Many false religions are most easily overthrown by scientific instruction. Many false sciences begin to totter when the believers in them are taught true religion. The ordinary superstitions which have so strong a hold on weak characters and uninstructed minds, are as inconsistent with true faith in God as with reasonable knowledge of nature. Science grows, but the facts, whether laws or instances of the operations of those laws, are not affected by that growth. And Religion grows, but the facts of which it takes cognisance are not affected by that growth. Neither in the one case nor in the other is the fact that there has been a development any argument to show that the belief thus developed has no real foundation. The pure subjectivity of Religion, to use technical language, is no more proved by this argument than the pure subjectivity of Science.
But there is one most important particular in which the development of Religion entirely differs from the development of Science. The leaders of scientific thought, from the time that Science has been conscious of itself, have never claimed direct divine instruction. For a long time, indeed, scientific thought rested largely on tradition, and that tradition was handed on from generation to generation without any examination into its foundations. The stores of past observations seemed so very much larger in quantity than any that men could add in their own day, that it was natural to give more weight to what was received than to what was newly observed. The experience of each generation in succession seemed nothing in comparison with the accumulated experience of all preceding generations. And in many cases old traditions stopped the growth of Science by preventing the acceptance of observations inconsistent with them. But such old traditions never claimed to rest on a revelation from God; or, if such a claim was made here and there, it never had strength enough to root itself in Science and form part of the recognised authority on which Science stood.
Science, from the time when it recognised itself as Science, has owed its development to observation of nature, and long before it shook off the fetters of unexamined tradition it had disclaimed, even for that tradition, any other basis than this. But not so Religion. Many religions, and among them the purer and higher religions, in proportion to their nearer approach to perfection, have claimed to rest on a Divine Revelation, and to be something more than either speculations of philosophic observers of nature, or deductions from innate principles of reason or conscience. Not thinkers, but prophets, or men claiming to be prophets, have given the purest religions to their disciples among mankind. It has always been possible to bring all religious teaching to the bar of conscience; it has been possible to put all religious teaching to logical examination; to systematise its precepts, whether of faith or conduct; to inquire into its fundamental principles, and to ask for the authority on which the whole teaching rests. But these applications of our intellectual faculties to Religion have always been admitted as coming after, not as preceding, the teaching to which they are made. The prophet does sometimes reason when he is deducing from principles already accepted, new precepts, or new prohibitions; but he does not confine himself to such reasoning in the fulfilment of his mission. He professes to have a message to give. He will accredit it by such means as He supplies Who has sent him with this message. He will, in order to open the consciences of his hearers, appeal to past revelations which they have already received, and with which his new message is in thorough harmony; but he often appeals also to his power over nature to bear witness that the Lord of nature has sent him. The Hebrew prophet will appeal to the teaching of the Law, will repeat the old revelation with its old unshaken and unshakeable precepts, but he will not stop there: he will also give signs from the Lord to prove that he has a right to the title of prophet which he claims. Armed with this title, he will go on to predict the coming of the Great Restorer, the Messiah; he will insist on the judgment of all things, sure to be passed in its appointed day; he will hint at the immortality of the soul, and the execution of the Almighty justice on every man that lives.
It is probable enough that many of the inferior religions have grown up with no such claim at all. The worship of ancestors, where it has prevailed, has very likely, as has been suggested, grown out of dreams, in which loving memory has brought back in sleep vivid images of the dead who were reverenced while they lived, and cannot be readily forgotten after death. Such worship barely attains to what may be called in strictness a religion. Its connexion with the spiritual faculty, the true seat of religion, is weak and vague. It is like the honour paid to a sovereign residing in a distant capital, with only the difference that those who receive this worship are supposed to reside not in a distant capital, but in another world. So, too, the worship of fetishes, of trees, of serpents, of the heavenly bodies, while they have some of the inferior elements of religion in them, yet hardly deserve to be called religions. There is in them the sentiment of fear, the acknowledgment of persons or some resemblance of persons imperceptible by the senses; the acknowledgment of powers possessed by these persons. But the central idea of a rule of holiness is either altogether wanting, or so very feeble and indistinct as to contain no promise of developing into ultimate supremacy. These religions do not often lay claim to a revelation from a supreme authority. And they have withered away with the growth of knowledge and with clearer perceptions of what Religion must be if it is to exist at all.
All the higher religions have claimed to rest on a divine revelation, and the Christian Religion on a series of such revelations. The Christian Religion does not profess (as does for instance the Mahommedan) to be wrapped up in one divine communication made to one man and admitting thereafter of no modifications. Though resting on divine revelation it is professedly a development, and is thus in harmony with the Creator's operations in nature. Whether we consider what is taught concerning the heavenly Moral Law, or concerning human nature and its moral and spiritual needs, or concerning Almighty God and His dealings with us His creatures, it is undeniable that the teaching of the Bible is quite different at the end from what it is at the beginning.