Had we not the practical proof of the prevalence of the credit of the black art in accomplished facts, the literature of the first half of the seventeenth century would be sufficient testimony to its horrid dominion. The works of the great dramatists, the writings of men of every class, continually suppose the universal power and horror of witchcraft. Internal evidence is abundant. The witches of Macbeth are no fanciful creation, and Shakspeare's representation of La Pucelle's fate is nothing more than a copy from life. What the vulgar superstition must have been may be easily conceived when men of the greatest genius or learning credited the possibility, and not only a theoretical but actual occurrence, of these infernal phenomena. Gibbon is at a loss to account for the fact that the acute understanding of the learned Erasmus, who could see through much more plausible fables, believed firmly in witchcraft.[137] Francis Bacon, the advocate and second founder of the inductive method and first apostle of the Utilitarian philosophy, opposed though he might have been to the vulgar persecution, was not able to get rid of the principles upon which the creed was based.[138] Sir Edward Coke, his contemporary, the most acute lawyer of the age, or (as it is said) of any time, ventured even to define the devil's agents in witchcraft. Sir Thomas Browne (author of 'Pseudodoxia Epidemica' or 'Vulgar Errors!'), a physician and writer of considerable merit, and Sir Matthew Hale, in 1664, proved their faith, the one by his solemn testimony in open court, the other by his still more solemn sentence. [137] See _Miscellaneous Works: Abstract of my Readings_. [138] 'Consorting with them [the unclean spirits who have fallen from their first estate] and all use of their assistance is unlawful; much more any worship or veneration whatsoever. But a contemplation and knowledge of their nature, power, illusions, not only from passages of sacred scripture but _from reason or experience_, is not the least part of spiritual wisdom. So truly the Apostle, "We are not ignorant of his wiles." And it is not less permissible in theology to investigate the nature of demons, than in physics to investigate the nature of drugs, or in ethics the nature of vice.'--_De Augmentis Scientiarum_, lib. iii. 2.