The reverence for classic antiquity, you must understand, which sprang up at the renaissance in the fifteenth century, was as indiscriminating as it was earnest. Men caught the trash as well as the jewels. They put the dreams of the Neoplatonists, Iamblicus, Porphyry, or Plotinus, or Proclus, on the same level as the sound dialectic philosophy of Plato himself. And these Neoplatonists were all, more or less, believers in magic--Theurgy, as it was called--in the power of charms and spells, in the occult virtues of herbs and gems, in the power of adepts to evoke and command spirits, in the significance of dreams, in the influence of the stars upon men's characters and destinies. If the great and wise philosopher Iamblicus believed such things, why might not the men of the sixteenth century? And so grew up again in Europe a passion for what were called the Occult sciences. It had always been haunting the European imagination. Mediaeval monks had long ago transformed the poet Virgil into a great necromancer. And there were immense excuses for such a belief. There was a mass of collateral evidence that the occult sciences were true, which it was impossible then to resist. Races far more ancient, learned, civilised, than any Frenchman, German, Englishman, or even Italian, in the fifteenth century had believed in these things. The Moors, the best physicians of the Middle Ages, had their heads full, as the "Arabian Nights" prove, of enchanters, genii, peris, and what not? The Jewish rabbis had their Cabala, which sprang up in Alexandria, a system of philosophy founded on the mystic meaning of the words and the actual letters of the text of Scripture, which some said was given by the angel Ragiel to Adam in Paradise, by which Adam talked with angels, the sun and moon, summoned spirits, interpreted dreams, healed and destroyed; and by that book of Ragiel, as it was called, Solomon became the great magician and master of all the spirits and their hoarded treasures. So strong, indeed, was the belief in the mysteries of the Cabala, that Reuchlin, the restorer of Hebrew learning in Germany, and Pico di Mirandola, the greatest of Italian savants, accepted them; and not only Pope Leo X. himself, but even statesmen and warriors received with delight Reuchlin's cabalistic treatise, "De Verbo Mirifico," on the mystic word "Schemhamphorash"--that hidden name of God, which whosoever can pronounce aright is, for the moment, lord of nature and of all daemons.