Father Sarpi, who was Macaulay's favorite historian, best known as the author of the "History of the Council of Trent," having the idea that the atmosphere immediately about him became in a degree impregnated with the mental electricity of his brain, was accustomed to build a paper enclosure about his head and person while he was writing. "All air is predatory," he said. Salieri, the Venetian composer, prepared himself for writing by filling a capacious dish at his side with candy and bonbons, which he consumed in large quantities during the process. Sarti, the well-known composer of sacred music, was obliged to work in the dark, or thought that he was, as daylight or artificial light of any sort at such moments utterly disconcerted him. Rossini, on the contrary, seemed to have no special ideas about his surroundings when he was in a mood for composing. He sat down among his friends, laughing and talking all the while that he was creating, and framing with marvellous rapidity strains that will live for all time. The whole of "Tancredi," which first made his fame, was produced in the very midst of social life and merry companionship. He said he found inspiration in the cheerful human voices about him. As to the peculiarities we have noted in others, they must at first have been mere affectations; but such is the force of habit, that no doubt these individuals became confirmed in them and really believed their indulgence a necessity. Carneades, the Greek philosopher, so famed for his subtle and powerful eloquence, before sitting down to write dosed himself with hellebore,--a strange resort, as it is supposed to act directly upon the liver, and only very slightly to stimulate the brain, besides being a fatal poison in large doses. It is well known that Dryden resorted to singular aids as preparatory to literary composition; being in the habit of first having himself bled and then making a meal of raw meat. The former process, he contended, rendered his brain clear, and the latter stimulated his imagination. In 1668 he held the position now filled by Tennyson, as poet-laureate of England. He was a notable instance of power in poetry, satire, and indecency, whom Cowper characterized as a lewd writer but a chaste companion. Dryden's own couplet will forcibly apply to himself:-- "O gracious God! how far have we Profaned thy heavenly gift of poesy!" His "Essay on Dramatic Poesy," according to Dr. Johnson, entitled him to be considered the father of English criticism. His dramas, such as "Mariage à-la-Mode," "All for Love," "Don Sebastian," etc., were, by reason of their indecency, examples of perverted genius. He was sixty-six years old when he wrote his "Alexander's Feast," by far his best literary effort. While Macaulay calls him "an illustrious renegade,"[66] Dr. Johnson says, "he found the English language brick and left it marble,"--a most superlative and ridiculous comment to be made by so erudite a critic.