In his latest book, George Huppert introduces the reader to a group of talented young men, some of them teenagers, who were the talk of the town in Renaissance Paris. They called themselves philosophes. They wrote poetry, they studied Greek and mathematics -- and they entertained subversive notions about religion and politics. Though classically trained, these men wrote in French to reach the widest possible audience. In time these young radicals learned to speak more softly, out of prudence, but they were heard clearly enough to foster a succession of disciples who continued to express confidence in the eventual enlightenment of humankind. Huppert argues that all attempts to suppress this movement failed because the program of the early philosophes and of their successors was deeply embedded in the classical educational system devised in the 1520s, the so-called ""style of Paris."" In the sixteenth century, these schools existed in such profusion and were so free of clerical or state interference that they became the foundation of a new culture which stood in direct opposition to age-old pieties. Through a series of portraits, Huppert presents the essential traits of this new culture. The teachers, lawyers, scientists, and priests called on here to illustrate the philosophes' outlook are little-known figures, for the most part, but their legacy is substantial. To demonstrate their importance, Huppert sets the mature reflections of eighteenth-century ideologues such as Kant, Voltaire, and Jefferson against the background, not of occasional precursors, but of an entire culture ineradicably permeated by revolutionary ideas born in the classrooms and the bookshops of Renaissance Paris.