Charles Dickens (1867). “Charles Dickens's works. Charles Dickens ed. [18 vols. of a 21 vol. set. Wanting A child's history of England; Christmas stories; The mystery of Edwin Drood].”, p.237
William Stanley Jevons's reflections on his earlier life, written when he was 27 (December 1862); later published in "Letters and Journal of W. Stanley Jevons" edited by Harriet A. Jevons, his wife (p. 12), 1886.
Marcus Tullius Cicero (1856). “Cicero's Three Books Of Offices, Or Moral Duties: Also His Cato Major, an Essay on Old Age; Laelius, an Essay on Friendship; Paradoxes; Scipio's Dream; and Letter to Quintus on the Duties of a Magistrate”, p.206