The Neo-Platonists preserved the idea, which had previously been admitted, that this intellectual essence comes down to earth through the planetary spheres and the atmosphere, and that as it sinks in the luminous ether and the damp air, it becomes laden with particles of the elements through which it passes. It surrounds itself with a garment or, as it is sometimes called, with a vehicle (ὄχημα) which thickens as it gradually draws near us.[[97]] This subtle body, the seat of the passions and of feeling, is intermediary between the spiritual principle which has issued from God and the flesh in which it is to enclose itself, and for certain philosophers it survives death and accompanies the soul to the Beyond, at least if the soul, not being free from earthly admixture, cannot wholly leave the world of sense, and therefore rises only to the planetary circle or to that of the fixed stars.
When the soul has suffered even more from the taint to which its contact with matter, the source of evil, exposes it, it is doomed to reincarnate itself in a new body and again to undergo the trial of this life. When it has become incurably corrupt and burdened with evil, it goes down into the depths of Hades.
Following Plato, Plotinus and his successors have adopted the Pythagorean doctrine of metempsychosis. They have even developed it, as we shall see,[[98]] together with the whole pessimistic and ascetic conception of life, the conception which looks at birth as a pain and a fall, a temporary subjection to a body from which emancipation must be sought. It is only after this liberation that the soul can reach perfect wisdom; it must no longer be troubled by the senses if it is to attain to the end of existence, to union with God.
This union can be realised even during this life in moments of ecstasy, in which the soul rises above thought and gives itself up entirely to love for the ineffable Unity in which it is absorbed. Like many other mystics, Plotinus disdains the ceremonies of positive cults: they were superfluous to the sage who could of himself enter into communion with the supreme Being. But even his disciple Porphyry conceded a greater value to rites and initiations. If they were powerless to lead the partakers of mysteries to the highest degree of perfection, their effect yet was to render men worthy to live among the visible gods who people heaven.[[99]] But only philosophical wisdom could rise to the intelligible world and the Unknowable.
The principle of a mystical relation between man and the divinity was to lead Neo-Platonism to more and more reverence for religious traditions. For it was held that in the past the revelation of truth had been granted by Heaven not only to divine Plato and the sages of Greece, but to all the founders of barbarous cults and authors of sacred writings. They all communicated profound teaching, which they sometimes hid beneath the veil of allegory. Inspired by the symbolism of the Pythagoreans, the last representatives of Greek philosophy claimed to rediscover the whole of Platonic metaphysics and the Platonic doctrine of immortality in the myths and rites of paganism. The speeches of Julian the Apostate on the Sun-King and the Mother of the Gods are characteristic examples of this bold exegesis, destitute of all critical and even all common sense, which was adopted by the last champions of the old beliefs.
These aberrations of Neo-Platonic thought must not hide the school’s historical importance from us, any more than the excesses of the superstitious theurgy which invaded it. When it revived Plato’s idealism, it produced a lasting change in the eschatological ideas which prevailed in paganism, and it deeply influenced even the Christian doctrines of immortality held since the fourth century. This will be better seen, we hope, in the course of these lectures.[[100]] It may be said that the conception of the lot of souls which reigned at the end of antiquity persisted on the whole through the Middle Ages—the immaterial spirits of the just rising through the planetary spheres to the Supreme Being enthroned above the zone of the fixed stars; the posthumous purification of those whom life has sullied in a purgatory intermediary between heaven and hell; the descent of the wicked into the depths of the earth where they suffered eternal chastisement. This threefold division of the universe and of souls was largely accepted at the time of the Empire’s decline by pagans and by Christians, and after long centuries it was again to find magnificent expression in Dante’s “Divine Comedy.” Before it could be destroyed astronomy had to destroy the whole cosmography of Posidonius and Ptolemy on which it was based. When the earth ceased to be the centre of the universe, the one fixed point in the midst of the moving circles of the skies, and became a tiny planet turning round another heavenly body, which itself moved in the immensity of space, among an infinity of similar stars, the naïve conception formed by the ancients of the journey of souls in a well-enclosed world could no longer be maintained. The progress of science discredited the convenient solution bequeathed to scholasticism by antiquity, and left us in the presence of a mystery of which the pagan mysteries never had even a suspicion.
I
AFTER LIFE IN THE TOMB
When Cicero in his Tusculans[[101]] first touches on the question of the immortality of the soul, he begins by citing in its support the fact that belief in it has existed since earliest antiquity. He states that unless the first Romans were convinced that man was not reduced to nought, when he left this life, and that all feeling was not extinguished in death, there could be no explanation of the rules of the old pontifical law as to funerals and burials, rules the violation of which was regarded as an inexpiable crime. This remark is that of a very judicious observer. There subsist in the funeral rites of all peoples, in the ceremony of mourning established by the religious law or by tradition, customs which derive from archaic conceptions of life beyond the tomb and which are still followed although their original meaning is no longer understood. Modern learning has sometimes successfully sought to elucidate them, borrowing light from the practices of savage peoples and from European folk-lore. We will not enter the domain of these researches, for since our special purpose here is to expound the ideas as to immortality held in later times, we have to consider only the beliefs which were still alive in that period. A false interpretation supplied by a philosopher may have more historical value for us than the true explanation of an institution which had lost its meaning.
But even among the ideas which were neither obliterated nor discredited, conceptions which originated at very different dates have to be distinguished.