The shade remained in the moon or was dissolved there, and pure reason rose to the sun whence it came forth, or even reached the summit of the heavens where reigned the Most High. A helpful escort, called by mythology Hermes the Soul-Guide, or psychopompos, led the elect to these Olympian peaks. There they regained their true country, and as birth had been to them a death, so their death was their rebirth. They enjoyed the contemplation of the luminous gods. They were rapt by the ravishing tune of the harmony of the spheres, that divine melody of which earthly music is but a feeble echo.[[70]]
Some souls were kept on the banks of the Styx and could not cross it: in other words, they were constrained to remain on the earth. The dead who had not had religious burial must linger beside their neglected bodies for a hundred years, the normal span of a human life, before they were admitted to the place of purgation, where they would sojourn for ten times that period.[[71]] In the same way those who had died young or whose days had been cut short by violence would not enter the purgatory before the due term of their life.[[72]] But especially the souls of the criminal and the impious were thus condemned to wander, restless and in pain, through the lower air, which they filled with their multitude. It was these demoniac spirits who returned as dismal phantoms to frighten the living, who were evoked by wizards and who revealed the future in oracles. Demonology accounted for all the aberrations of magic and divination. These spirits rose to the aerial purgatory after they had for long years tormented and been tormented, but they could not reach the moon, which repelled them; they were condemned to reincarnation in new bodies, either of men or of beasts, and were once again delivered to the fury of the passions. These passions are the Erinyes, of whom poets sung, that in Tartarus they burnt criminals with their torches and scourged them with their whips. For there was no subterranean hell: Hades was in the air or on our earth, and the infernal sufferings described by mythology were the various tortures inflicted on the souls condemned to transmigration.[[73]]
This religious philosophy, which, by a symbolism transforming the meaning of the traditional beliefs, reconciled these with men’s intelligence, did more than any other to revive faith in immortality. Many enlightened men, like Cicero and Cato, had sought consolation for the misfortunes of this world and a hope for the Beyond in reading Plato, but Plato’s proof of immortality could convince only those already convinced.[[74]] Pythagorism, on the other hand, offered to restless souls a certainty founded on a revelation made to ancient sages, and it satisfied at once the Roman love for order and rule, and the human love for the marvellous and the mysterious. The evidence of the effect of this philosophy is still recognisable, although it often has not been recognised, in the compositions decorating many sepulchral monuments and in the wording of several epitaphs. A tombstone found at Philadelphia in Lydia is particularly curious.[[75]] It bears a representation of the Y symbol, that is, of the diverging roads between which man must choose when he leaves childhood behind him. On the one side earthly travail leads the virtuous man to eternal rest; on the other softness and debauchery bring the vicious man to a gulf into which he falls. A metrical epitaph, found at Pisaurum (Pesaro), hints covertly at the ideas of the school. This commemorates a child who, in spite of his youth, had learnt the dogmas of Pythagoras and read “the pious verses of Homer” as well as the philosophers, and had studied in Euclid the sacred science of numbers. His soul, runs the inscription,[[76]] “goes forward through the gloomy stars of deep Tartarus towards the waters of Acheron,” a sentence which can be understood only on the supposition that Tartarus and Acheron had for the author a figurative meaning and lay in the depths not of the earth but of the sky.
The belief in a celestial immortality which was thus propagated by the half philosophical, half religious sect of the Pythagoreans was to find a powerful interpreter in a thinker who had a predominant influence over his contemporaries and the succeeding generation—in Posidonius. We know little of his life. Born at Apamea in Syria, about the year 135, he early left his native country, of which he seems to have kept a poor opinion, and as a young student in Athens he attended the lectures of the older Stoic Panaetius. The universal curiosity which was to make him a scholar of encyclopaedic knowledge soon impelled him to take long journeys, in which he even reached the shores of the Atlantic and studied the tides of the ocean. Upon his return he opened a school in the free city of Rhodes and there numbered Cicero among his hearers. When he died at the age of eighty-four the prestige he enjoyed both in the Roman world and among the Greeks was immense. He owed his intellectual ascendancy as much to the marvellous variety of the knowledge which he displayed, as philosopher, astronomer, historian, geographer and naturalist, as to his copious, harmonious and highly coloured style.
A theologian rather than a logician, a scholar rather than a critic, he did not construct an original metaphysical system comparable to those of the great founders of schools. But Posidonius was the most prominent representative of that syncretism which, as we have seen, showed itself in the Pythagoreans before his day and which reigned in the world about him, because men were weary of the sterile discussions of opposing thinkers. He gave the support of his authority and his eloquence to the eclecticism which reconciled the principles of the ancient Greek schools. Moreover, his Syrian origin led him to combine these doctrines with the religious ideas of the East, which had with astrology given the Hellenes a new conception of man and of the gods.[[77]]
It is exactly here that Posidonius is important from the point of view of our subject: his tendencies represent a direct reaction against the scepticism of his master Panaetius, who denied both the survival of the soul[[78]] and the possibility of divination. Posidonius introduced into Stoicism momentous ideas derived at once from Pythagorism and from Eastern cults, and sought to establish them firmly by connecting them with a system of the world, which his vast intelligence had sought to understand in all its aspects. His faith in immortality is strictly related to his cosmography and receives support from his physics.
It was this system of the world which was, thanks to Ptolemy’s authority, to perpetuate itself on the whole until the time of Copernicus. We will here give a broad outline of its essential features, because the eschatological doctrines were to remain for centuries connected with it. The terrestrial globe was held to be suspended, motionless, in the centre of the universe, surrounded by an atmosphere formed of the three other elements and reaching to the moon. That part of the atmosphere which was near the earth was thickened and darkened by heavy vapours rising from the soil and the waters. Above, there moved a purer and lighter air which, as it neared the sky, was warmed by contact with the higher fires. Still higher were ranged the concentric spheres of the seven planets, wrapped in ether, a subtle and ardent fluid—first the moon, which still received and gave back the exhalations of the earth,[[79]] then Mercury and Venus, the two companions of the sun in his daily course. The fourth place, that is, the middle point of the superimposed heavens, was occupied by the luminary of the day,—here Posidonius forsakes Plato and follows the Chaldeans,—the burning heart of the world, the intelligent light which is the source of our minds.[[80]] Above the sun moved the three higher planets—Mars, Jupiter and Saturn. And these seven wandering stars were surrounded by the sphere of the fixed stars, which were animated by constant and uniform movement. That sphere marked the world’s boundary: beyond it there was only void or the ether.
The universe, as this philosophy imagined it, had therefore well-defined limits: when men raised their eyes to the constellations of the firmament, they thought they perceived its end. The depths of the sky were not then unfathomable; he who sank his gaze in them was not seized with giddiness at the abysses nor bewildered by inconceivable magnitudes, and was not tempted to cry with Pascal:[[81]] “The eternal silence of these boundless spaces affrights me.” Nor was the universe then a multiplicity of heavenly bodies moving to an unknown goal and perpetually transformed, transitory manifestations of an energy developed for undiscoverable ends. The conception formed of the world was static, not dynamic. It was a machine of which the wheels turned according to immutable laws, an organism of which all the parts were united by reciprocal sympathy as they acted and reacted on each other.
This organism was alive, penetrated throughout by the same essence as the soul which maintains our life and thought. This soul was an igneous breath of which the moral corruption was conceived quite materially. When it gave itself up to the desires of the senses, to corporeal passions, its substance thickened and was troubled, and the mud of this pollution adhered to it like a crust. When the soul left the body at the time of death, it became a spirit like the multitude of demons who peopled the atmosphere. But its lot varied in accordance with its condition. If it were laden with matter, its weight condemned it to float in the densest air, the damp-charged gas which immediately surrounded the earth, and its very composition then caused it to reincarnate itself in new bodies.[[82]] But if it had remained free from all alloy its lightness caused it to pass immediately through this heavier layer of air and bore it to the higher spaces. It stopped in this ascension when, within the ether which was about the moon, it found itself in surroundings like its own substance. Some elect beings, the divine spirits of the sages, kept such purity that they rose through the ether as far as the highest astral spheres. In this system the doctrine of immortality is seen to be closely knit up with cosmography.