Science by itself, good or bad, can never be religion, any more than religion by itself can ever be science, or even philosophy. It is by looking back into the past that we see the facts in an essential simplicity less easy to reach in more sophisticated ages. We need not again go so far back as the medicine-men of Africa and Siberia. Mysticism in pagan antiquity, however less intimate to us and less seductive than that of later times, is perhaps better fitted to reveal to us its true nature. The Greeks believed in the spiritual value of “conversion” as devoutly as our Christian sects and they went beyond most such sects in their elaborately systematic methods for obtaining it, no doubt for the most part as superficially as has been common among Christians. It is supposed that almost the whole population of Athens must have experienced the Eleusinian initiation. These methods, as we know, were embodied in the Mysteries associated with Dionysus and Demeter and Orpheus and the rest, the most famous and typical being those of Attic Eleusis.[88] We too often see those ancient Greek Mysteries through a concealing mist, partly because it was rightly felt that matters of spiritual experience were not things to talk about, so that precise information is lacking, partly because the early Christians, having their own very similar Mysteries to uphold, were careful to speak evil of Pagan Mysteries, and partly because the Pagan Mysteries no doubt really tended to degenerate with the general decay of classic culture. But in their large simple essential outlines they seem to be fairly clear. For just as there was nothing “orgiastic” in our sense in the Greek “orgies,” which were simply ritual acts, so there was nothing, in our sense, “mysterious” in the Mysteries. We are not to suppose, as is sometimes supposed, that their essence was a secret doctrine, or even that the exhibition of a secret rite was the sole object, although it came in as part of the method. A mystery meant a spiritual process of initiation, which was, indeed, necessarily a secret to those who had not yet experienced it, but had nothing in itself “mysterious” beyond what inheres to-day to the process in any Christian “revival,” which is the nearest analogue to the Greek Mystery. It is only “mysterious” in the sense that it cannot be expressed, any more than the sexual embrace can be expressed, in words, but can only be known by experience. A preliminary process of purification, the influence of suggestion, a certain religious faith, a solemn and dramatic ritual carried out under the most impressive circumstances, having a real analogy to the Catholic’s Mass, which also is a function, at once dramatic and sacred, which culminates in a spiritual communion with the Divine—all this may contribute to the end which was, as it always must be in religion, simply a change of inner attitude, a sudden exalting realisation of a new relationship to eternal things. The