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
Bellum se ipsum alet Bellum se ipsum alet The Latin phrase bellum se ipsum alet () or bellum se ipsum alit (, ), and its German rendering "Der Krieg ernährt den Krieg" describe the military strategy of feeding and funding armies primarily with the resources of occupied territories. The phrase, coined by Ancient Roman statesman Cato the Elder, is primarily associated with the Thirty Years' War (1618–1648). The phrase "bellum se ipsum alit" was first mentioned in "Ab urbe condita libri" XXXIV,9,12, written by Roman historian Titus Livius (Livy) (59 BC-17 AD), who attributed it to Cato Marcus Porcius ("the Elder", 234–149 BC), a