Marcus Tullius Cicero (1755). “M.T. Cicero, His Offices: Or, His Treatise Concerning the Moral Duties of Mankind; His Cato Major, Concerning the Means of Making Old Age Happy; His Laelius, Concerning Friendship; His Moral Paradoxes; The Vision of Scipio, Concerning a Future State; His Letter Concerning the Duties of a Magistrate. With Notes Historical and Explanatory”, p.53
Marcus Tullius Cicero (1850). “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. Literally translated, with notes ... by Cyrus R. Ed”, p.313
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.48
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.52