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
Michael Bloomberg's Slate 60 Dinner Keynote Address At William J. Clinton Presidential Library In Little Rock, Arkansas, www1.nyc.gov. November 12, 2006.