This highly readable translation of the major works of the 18th- century philosopher Etienne Bonnot, Abbe de Condillac, a disciple of Locke and a contemporary of Rousseau, Voltaire, and Diderot, shows his influence on psychiatric diagnosis as well as on the education of the deaf, the retarded, and the preschool child. Published two hundred years after Condillac's death, this translation contains treatises which were, until now, virtually unavailable in English: A Treatise on Systems, A Treatise of the Sensations, Logic.

In recent years, an increasing number of thinkers have grown suspicious of the Enlightenment ideals of progress, reason, and freedom. These critics, many inspired by Martin Heidegger, have attacked modern philosophy's attempt to ground a vision of the world upon the liberty of the human subject. Pointing to the rise of totalitarian regimes in this century, they argue that the Enlightenment has promoted the enslavement of human beings rather than their freedom.
In this first of four volumes that aim to revitalize the fundamental values of modern political thought, one of the leading figures in the contemporary revival of liberalism in France responds to these critics and offers a philosophically cogent defense of a humanistic modernity. Luc Ferry reexamines the philosopical basis of the contemporary retreat from the Enlightenment and then suggests his own alternative, which defends the ideals of modernity while giving due consideration to the objections of the critics.