[Sidenote: Magic and medicine.] Nearly half the books of the _Natural History_ deal in whole or in part with remedies for diseases, and it is therefore of the relations between magic and natural science, and more particularly between magic and medicine, that Pliny gives us the most detailed information. Indeed, he asserts that “no one doubts” that magic “originally sprang from medicine and crept in under the show of promoting health as a loftier and more sacred medicine.” Magic and medicine have developed together, and the latter is now in imminent danger of being overwhelmed by the follies of magic, which have made men doubt whether plants possess any medicinal properties. [Sidenote: Magic and philosophy.] In the opinion of many, however, magic is sound and beneficial learning. In antiquity, and for that matter at almost all times, the height of literary fame and glory has been sought from that science.[192] Eudoxus would have it the most noted and useful of all schools of philosophy. Empedocles and Plato studied it; Pythagoras and Democritus perpetuated it in their writings. [Sidenote: Falseness of magic.] But Pliny himself feels that the assertions of the books of magic are fantastic, exaggerated, and untrue. He repeatedly brands the _magi_ or magicians as fools or impostors, and their statements as absurd and impudent tissues of lies.[193] _Vanitas_, or “nonsense,” is his stock-word for their beliefs.[194] Some of their writings must, in his opinion, have been dictated by a feeling of contempt and derision for humanity.[195] Nero proved the falseness of the art, for although he studied magic eagerly and with his unlimited wealth and power had every opportunity to become a skilful practitioner, he was unable to work any marvels and abandoned the attempt.[196] Pliny therefore comes to the conclusion that magic is “invalid and empty, yet has some shadows of truth, which however are due more to poisons than to magic.”[197] [Sidenote: Crimes of magic.] The last remark brings us to charges of evil practices made against the magicians. Besides poisons, they specialize in love-potions and drugs to produce abortions;[198] and some of their operations are inhuman or obscene and abominable. They attempt baleful sorcery or the transfer of disease from one person to another.[199] Osthanes and even Democritus propound such remedies as drinking human blood or utilizing in magic compounds and ceremonies parts of the corpses of men who have been violently slain.[200] Pliny thinks that humanity owes a great debt to the Roman government for abolishing those monstrous rites of human sacrifice, “in which to slay a man was thought most pious; nay more, to eat men was thought most wholesome.”[201] [Sidenote: Pliny’s censure of magic is mainly intellectual.]