Andrew Dickson White,
History of the Warfare of Science with Theology in Christendom
“ Of the former was magic used in curing diseases, in determining times auspicious for enterprises, and even in contributing to amusement; of the latter was magic used to bring disease and death on men and animals or tempests upon the growing crops. Hence gradually arose a general distinction between white magic, which dealt openly with the more beneficent means of nature, and black magic, which dealt secretly with occult, malignant powers. ”
