Marcus Tullius Cicero (1872). “The Academic Questions: Treatise De Finibus and Tusculan Disputations of M. R. Cicero, with a Sketch of the Greek Philosophers Mentioned by Cicero”, p.267
Marcus Tullius Cicero (1872). “The Academic Questions: Treatise De Finibus and Tusculan Disputations of M. R. Cicero, with a Sketch of the Greek Philosophers Mentioned by Cicero”, p.163
Marcus Tullius Cicero (1857). “Cicero's Three Books of Offices: Or Moral Duties; Also His Cato Major ... Laelius ... Paradoxes; Scipio's Dream; and Letter to Quintus on the Duties of a Magistrate. Literally Tr., with Notes ...”, p.311