CROUSAZ (John Peter de)
, a learned philosopher and mathematician, was born at Lausanne in Switzerland, April 13, 1663; where he died in 1748, at 85 years of age. Having made great progress in mathematics and the philosophy of Des Cartes, he travelled into Geneva, Holland, and France. He was successively professor in several universities; and at length was chosen governor to Prince Frederick of HesseCassel, nephew to the king of Sweden.
Crousaz was author of many works, in various branches; belles-lettres, logic, philosophy, divinity, &c, &c; but the most esteemed of them are, 1. His Logic; the best edition of which is that of 1741, in 6 vols. 8vo.—2. A Treatise on Beauty.—3. A Treatise on Education, 2 vols, 12mo.—4. A Treatise on the Human Understanding.—5. Several Treatises on Philosophy and Mathematics; as a Treatise on Motion, &c. with several papers inserted in the Memoirs of the French Academy of Sciences.