Étienne Bonnot de Condillac

Étienne Bonnot de Condillac (1714–1780) was a French philosopher and Catholic priest, known for his significant contributions to psychology and the philosophy of mind. He was a key figure in the Age of Enlightenment and a proponent of empiricism. Condillac developed the theory of sensationalism, which asserts that all human knowledge and faculties are derived solely from sensory experiences. He argued against the notion of innate ideas, proposing instead that the mind is initially a blank slate, and that ideas are formed through the transformation and association of sensations. His influential works, such as the 'Essai sur l'origine des connaissances humaines' (1746) and the 'Traité des sensations' (1754), systematically explored these ideas. In the latter, he famously used the allegory of a statue to illustrate how sensory input shapes consciousness, memory, judgment, and desire. Condillac also applied his empirical approach to economics, politics, and logic, though his contributions in these areas are less renowned than his psychological theories. He was a friend to prominent thinkers like Denis Diderot and Jean-Jacques Rousseau, and his ideas had a considerable impact on subsequent philosophical thought in both France and England.