(14) The most dangerous form of black magic is the scientific perversion of occult power for the gratification of personal desire. Its less complex and more universal form is human selfishness, for selfishness is the fundamental cause of all worldly evil. A man will barter his eternal soul for temporal power, and down through the ages a mysterious process has been evolved which actually enables him to make this exchange. In its various branches the black art includes nearly all forms of ceremonial magic, necromancy, witchcraft, sorcery, and vampirism. Under the same general heading are also included mesmerism and hypnotism, except when used solely for medical purposes, and even then there is an element of risk for all concerned.

(60) The black magician cannot use the symbols of white magic without bringing down upon himself the forces of white magic, which would be fatal to his schemes. He must therefore distort the hierograms so that they typify the occult fact that he himself is distorting the principles for which the symbols stand. Black magic is not a fundamental art; it is the misuse of an art. Therefore it has no symbols of its own. It merely takes the emblematic figures of white magic, and by inverting and reversing them signifies that it is left-handed.

(46) Primitive conceptions concerning the warfare between the principles of Good and Evil were often based upon the alternations of day and night. During the Middle Ages, the practices of black magic were confined to the nocturnal hours; and those who served the Spirit of Evil were called black magicians, while those who served the Spirit of Good were called white magicians. Black and white were associated respectively with night and day, and the endless conflict of light and shadow is alluded to many times in the mythologies of various peoples.