Originally published in 1967, this book discusses some key writers of the Renaissance: Machiavelli, Castiglione, Bacon and Hobbes and compares their work by relating it that of others in England and elsewhere. Chapters on Bacon contain references to Galileo and Descartes; the chapter on Castiglione also touches on Montaigne. The book also contrasts various currents of thought in the Renaissance with their medieval counterparts or forerunners. The volume isolates the great themes, or revolutionary shifts in as they manifest themselves in the work of important writers and thinkers.