‘Serenity now,’ repeated Seinfeld’s Frank Costanza whenever his blood pressure got too high. His doctor recommended this anger-management technique, but he might as well have got it from Seneca, whose De Ira (Of Anger) James Romm has edited, translated, and released as How To Keep Your Cool. Seneca’s credentials are mixed: as a senator, he probably saw a fair bit of Caligula’s anger; as ... (read more)