"There is, in the very feeling of those passions, something harsh, jarring, and convulsive, something that tears and distracts the breast, and is altogether destructive of that composure and tranquillity of mind which is so necessary to happiness, and which is best promoted by the contrary passions of gratitude and love."
— Smith, Adam (1723-1790)
(pp. 75-8; cf. pp. 37-8 in Liberty Fund ed.)
See The Theory of Moral Sentiments: By Adam Smith (London: Printed for A. Millar; and A. Kincaid and J. Bell, in Edinburgh, 1759). <Link to ESTC><Link to ECCO-TCP>
Reading Adam Smith, The Theory of Moral Sentiments, ed. D.D. Raphael and A.L. Macfie (Indianapolis: Liberty Fund, 1984).