It is necessary, therefore, to prove clearly that in the Early Church, at least, Christianity was no whit behind other great religions in possessing a hidden side, and that it guarded, as a priceless treasure, the secrets revealed only to a select few in its Mysteries. But ere doing this it will be well to consider the whole question of this hidden side of religions, and to see why such a side must exist if a religion is to be strong and stable; for thus its existence in Christianity will appear as a foregone conclusion, and the references to it in the writings of the Christian Fathers will appear simple and natural instead of surprising and unintelligible. As a historical fact, the existence of this esotericism is demonstrable; but it may also be shown that intellectually it is a necessity.
The first question we have to answer is: What is the object of religions? They are given to the world by men wiser than the masses of the people on whom they are bestowed, and are intended to quicken human evolution. In order to do this effectively they must reach individuals and influence them. Now all men are not at the same level of evolution, but evolution might be figured as a rising gradient, with men stationed on it at every point. The most highly evolved are far above the least evolved, both in intelligence and character; the capacity alike to understand and to act varies at every stage. It is, therefore, useless to give to all the same religious teaching; that which would help the intellectual man would be entirely unintelligible to the stupid, while that which would throw the saint into ecstasy would leave the criminal untouched. If, on the other hand, the teaching be suitable to help the unintelligent, it is intolerably crude and jejune to the philosopher, while that which redeems the criminal is utterly useless to the saint. Yet all the types need religion, so that each may reach upward to a life higher than that which he is leading, and no type or grade should be sacrificed to any other. Religion must be as graduated as evolution, else it fails in its object.
Next comes the question: In what way do religions seek to quicken human evolution? Religions seek to evolve the moral and intellectual natures, and to aid the spiritual nature to unfold itself. Regarding man as a complex being, they seek to meet him at every point of his constitution, and therefore to bring messages suitable for each, teachings adequate to the most diverse human needs. Teachings must therefore be adapted to each mind and heart to which they are addressed. If a religion does not reach and master the intelligence, if it does not purify and inspire the emotions, it has failed in its object, so far as the person addressed is concerned.
Not only does it thus direct itself to the intelligence and the emotions, but it seeks, as said, to stimulate the unfoldment of the spiritual nature. It answers to that inner impulse which exists in humanity, and which is ever pushing the race onwards. For deeply within the heart of all—often overlaid by transitory conditions, often submerged under pressing interests and anxieties—there exists a continual seeking after God. "As the hart panteth after the water-brooks, so panteth"[7] humanity after God. The search is sometimes checked for a space, and the yearning seems to disappear. Phases recur in civilisation and in thought, wherein this cry of the human Spirit for the divine—seeking its source as water seeks its level, to borrow a simile from Giordano Bruno—this yearning of the human Spirit for that which is akin to it in the universe, of the part for the whole, seems to be stilled, to have vanished; none the less does that yearning reappear, and once more the same cry rings out from the Spirit. Trampled on for a time, apparently destroyed, though the tendency may be, it rises again and again with inextinguishable persistence, it repeats itself again and again, no matter how often it is silenced; and it thus proves itself to be an inherent tendency in human nature, an ineradicable constituent thereof. Those who declare triumphantly, "Lo! it is dead!" find it facing them again with undiminished vitality. Those who build without allowing for it find their well-constructed edifices riven as by an earthquake. Those who hold it to be outgrown find the wildest superstitions succeed its denial. So much is it an integral part of humanity, that man will have some answer to his questionings; rather an answer that is false, than none. If he cannot find religious truth, he will take religious error rather than no religion, and will accept the crudest and most incongruous ideals rather than admit that the ideal is non-existent.
Religion, then, meets this craving, and taking hold of the constituent in human nature that gives rise to it, trains it, strengthens it, purifies it and guides it towards its proper ending—the union of the human Spirit with the divine, so "that God may be all in all."[8]
The next question which meets us in our enquiry is: What is the source of religions? To this question two answers have been given in modern times—that of the Comparative Mythologists and that of the Comparative Religionists. Both base their answers on a common basis of admitted facts. Research has indisputably proved that the religions of the world are markedly similar in their main teachings, in their possession of Founders who display superhuman powers and extraordinary moral elevation, in their ethical precepts, in their use of means to come into touch with invisible worlds, and in the symbols by which they express their leading beliefs. This similarity, amounting in many cases to identity, proves—according to both the above schools—a common origin.
But on the nature of this common origin the two schools are at issue. The Comparative Mythologists contend that the common origin is the common ignorance, and that the loftiest religious doctrines are simply refined expressions of the crude and barbarous guesses of savages, of primitive men, regarding themselves and their surroundings. Animism, fetishism, nature-worship, sun-worship—these are the constituents of the primeval mud out of which has grown the splendid lily of religion. A Kṛiṣhṇa, a Buddha, a Lao-tze, a Jesus, are the highly civilised but lineal descendants of the whirling medicine-man of the savage. God is a composite photograph of the innumerable Gods who are the personifications of the forces of nature. And so forth. It is all summed up in the phrase: Religions are branches from a common trunk—human ignorance.
The Comparative Religionists consider, on the other hand, that all religions originate from the teachings of Divine Men, who give out to the different nations of the world, from time to time, such parts of the fundamental verities of religion as the people are capable of receiving, teaching ever the same morality, inculcating the use of similar means, employing the same significant symbols. The savage religions—animism and the rest—are degenerations, the results of decadence, distorted and dwarfed descendants of true religious beliefs. Sun-worship and pure forms of nature-worship were, in their day, noble religions, highly allegorical but full of profound truth and knowledge. The great Teachers—it is alleged by Hindus, Buddhists, and by some Comparative Religionists, such as Theosophists—form an enduring Brotherhood of men who have risen beyond humanity, who appear at certain periods to enlighten the world, and who are the spiritual guardians of the human race. This view may be summed up in the phrase: "Religions are branches from a common trunk—Divine Wisdom."
This Divine Wisdom is spoken of as the Wisdom, the Gnosis, the Theosophia, and some, in different ages of the world, have so desired to emphasise their belief in this unity of religions, that they have preferred the eclectic name of Theosophist to any narrower designation.
The relative value of the contentions of these two opposed schools must be judged by the cogency of the evidence put forth by each. The appearance of a degenerate form of a noble idea may closely resemble that of a refined product of a coarse idea, and the only method of deciding between degeneration and evolution would be the examination, if possible, of intermediate and remote ancestors. The evidence brought forward by believers in the Wisdom is of this kind. They allege: that the Founders of religions, judged by the records of their teachings, were far above the level of average humanity; that the Scriptures of religions contain moral precepts, sublime ideals, poetical aspirations, profound philosophical statements, which are not even approached in beauty and elevation by later writings in the same religions—that is, that the old is higher than the new, instead of the new being higher than the old; that no case can be shown of the refining and improving process alleged to be the source of current religions, whereas many cases of degeneracy from pure teachings can be adduced; that even among savages, if their religions be carefully studied, many traces of lofty ideas can be found, ideas which are obviously above the productive capacity