W. G. Waters, Jerome Cardan: A Biographical Study
“ When he made a beginning of the De Utilitate Cardan was at the zenith of his fortunes. He had lately returned from his journey to Scotland, having made a triumphant progress through the cities of Western Europe. Thus, with his mind well stored with experience of divers lands, his wits sharpened by intercourse with the élite of the learned world, and his hand nerved by the magnetic stimulant of success, he sat down to write as the philosopher and man of the world, rather than as the man of science. He was, in spite of his prosperity, inclined to deal with the more sombre side of life. ”
