Turnbull George (1698–1748), Scottish moral sense philosopher and educational theorist. He was briefly a philosophy regent at Aberdeen (1721–27) and a teacher of Reid. His Principles of Moral and Christian Philosophy (1740) and Discourse upon the Nature and Origin of Moral and Civil Laws (1741) show him as the most systematic of those who aimed to recast moral philosophy on a Newtonian model, deriving moral laws ‘experimentally’ from human psychology. In A Treatise on Ancient Painting (1740), Observations Upon Liberal Education (1742), and some smaller works, he extolled history and the arts as propaedeutic to the teaching of virtue and natural religion. See also MORAL SENSE THEORY. M.A.St.