Charles Trinkaus can be counted among the eminent intellectual and cultural historians of the Renaissance. This new collection of his articles brings together pieces published since 1982. The studies are concerned with Italian Renaissance humanists and philosophers who tended to affirm human capacities to shape earthly existence, despite the traditional limitations proposed by some scholastics and astrologers. Professor Trinkaus holds that, without abandoning their Christian faith, or their acceptance of physical influences from the cosmos, these writers, in their stress on human capacities, were responding to the vigorous activism of their contemporaries in all aspects of their existence. The final four papers also provide a series of reflections on the modern historiography of the Renaissance.