Condillac at English => English (The Britannica Concise) Of Explained:
French philosopher, psychologist, and economist. He was ordained a priest in 1740. In his Essay on the Origin of Human Knowledge (1746), he systematically discussed the empiricism of J. Locke. In Treatise on Sensations (1754), he questioned Locke's doctrine that the senses provide intuitive knowledge. His economic views, presented in Commerce and Government (1776), were based on the notion that value depends on utility rather than labor. The need for something useful, he argued, gives rise to value, while prices result from the exchange of valued items.