Vanity—like laudanum, and other poisonous medicines, is beneficial in small, though injurious in large quantities. No man, who is not pleased with himself, even in a personal sense, can please others.
Source, in full
Vol. 2, p. 179. Repeated in Frederick Saunders, Salad for the Social (New York: De Witt & Davenport, 1856), "The Toilette and its Devotees", p. 133; rev. ed. (New York: Thomas Whittaker, 1883), p. 320, replaces "Vanity" with "Pride"