Twin sisters, born of the superstitions of the learned Orient, magic and astrology always remained the hybrid daughters of sacerdotal culture. Their existence
was governed by two contrary principles, reason and faith, and they never ceased to fluctuate between these two poles of thought. Both were inspired by a belief in universal sympathy, according to which occult and powerful relations exist between human beings and dead objects, all possessing a mysterious life. The doctrine of sidereal influences, combined with a knowledge of the immutability of the celestial revolutions, caused astrology to formulate the first theory of absolute fatalism, whose decrees might be known beforehand. But, besides this rigorous determinism, it retained its childhood faith in the divine stars, whose favor could be secured and malignity avoided through worship. In astrology the experimental method was reduced to the completing of prognostics based on the supposed character of the stellar gods.
Magic also remained half empirical and half religious. Like our physics, it was based on observation, it proclaimed the constancy of the laws of nature, and sought to conquer the latent energies of the material world in order to bring them under the dominion of man's will. But at the same time it recognized, in the powers that it claimed to conquer, spirits or demons whose protection might be obtained, whose ill-will might be appeased, or whose savage hostility might be unchained by means of immolations and incantations.
All their aberrations notwithstanding, astrology and magic were not entirely fruitless. Their counterfeit learning has been a genuine help to the progress of human knowledge. Because they awakened chimerical hopes and fallacious ambitions in the minds of their adepts, researches were undertaken which undoubtedly
would never have been started or persisted in for the sake of a disinterested love of truth. The observations, collected with untiring patience by the Oriental priests, caused the first physical and astronomical discoveries, and, as in the time of the scholastics, the occult sciences led to the exact ones. But when these understood the vanity of the astounding illusions on which astrology and magic had subsisted, they broke up the foundation of the arts to which they owed their birth.
THE TRANSFORMATION OF ROMAN PAGANISM.
About the time of the Severi the religion of Europe must have presented an aspect of surprising variety. Although dethroned, the old native Italian, Celtic and Iberian divinities were still alive. Though eclipsed by foreign rivals, they lived on in the devotion of the lower classes and in the traditions of the rural districts. For a long time the Roman gods had been established in every town and had received the homage of an official clergy according to pontifical rites. Beside them, however, were installed the representatives of all the Asiatic pantheons, and these received the most fervent adoration from the masses. New powers had arrived from Asia Minor, Egypt, Syria, and the dazzling Oriental sun outshone the stars of Italy's temperate sky. All forms of paganism were simultaneously received and retained while the exclusive monotheism of the Jews kept its adherents, and Christianity strengthened its churches and fortified its orthodoxy, at the same time giving birth to the baffling vagaries of gnosticism. A hundred different currents carried away hesitating and undecided minds, a hundred contrasting sermons made appeals to the conscience of the people.
Let us suppose that in modern Europe the faithful