Know thyself know what are the thoughts and passions of all other men upon the like occasions." In 1734 Alexander Pope wrote a poem entitled "An Essay on Man, Epistle II", which begins "Know then thyself, presume not God to scan, The proper study of mankind is Man." In 1735 Carl Linnaeus published the first edition of "Systema Naturae" in which he described humans ("Homo") with the simple phrase ""Nosce te ipsum"". In 1750 Benjamin Franklin, in his "Poor Richard's Almanack", observed the great difficulty of knowing one's self, with: "There are three Things extremely hard, Steel, a Diamond, and to know
Ave Imperator, morituri te salutant Ave Imperator, morituri te salutant "Ave, Imperator, morituri te salutant" ("Hail, Emperor, those who are about to die salute you") is a well-known Latin phrase quoted in Suetonius, "De Vita Caesarum" ("The Life of the Caesars", or "The Twelve Caesars"). It was reportedly used during an event in AD 52 on Lake Fucinus by naumachiarii—captives and criminals fated to die fighting during mock naval encounters—in the presence of the emperor Claudius. Suetonius reports that Claudius replied ""Aut non"" ("or not"). Variant wordings include ""Ave Caesar"" and ""Morituri te salutamus""—the latter in the 1st person ("We who are about to die