Marcus Tullius Cicero (1855). “Cicero's Three books of offices, or moral duties: also his Cato Major, an essay on old age; Lælius, an essay on friendship; Paradoxes; Scipio's dream; and Letter to Quintus on the duties of a magistrate”, p.42
Zora Neale Hurston, Alice Walker (1979). “I Love Myself when I Am Laughing ... and Then Again when I Am Looking Mean and Impressive: A Zora Neale Hurston Reader”, p.152, Feminist Press at CUNY