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.

Condillac's Essay on the Origin of Human Knowledge, first published in French in 1746 and offered here in a new translation, represented in its time a radical departure from the dominant conception of the mind as a reservoir of innately given ideas. Descartes had held that knowledge must rest on ideas; Condillac turned this upside down by arguing that speech and words are the origin of mental life and knowledge. His work influenced many later philosophers, and also anticipated Wittgenstein's view of language and its relation to mind and thought.

The monograph tells a different story on the history of modern philosophy: the narrative is no longer centred on the question whether knowledge results from experience or reason, but whether experience and reason are in fact possible without language.

This series offers a range of heretofore unavailable writings in English translation on the subjects of art, architecture, and aesthetics. Camus's description of the French hotel argues that architecture should please the senses and the mind.