Our lesson today comes from the songwriter Frank Loesser: "Praise The Lord And Pass The Ammunition." Or as Barack Obama and his San Francisco pals would put it: God and guns. Loesser got the phrase from Howell Forgy, a naval chaplain at Pearl Harbor, who walked the decks of the USS New Orleans under Japanese bombardment, exhorting his comrades. When the line came to Loesser's ears, he turned it into a big hit song of the Second World War: "Praise the Lord and swing into position Can't afford to sit around a-wishin'…" – which some folks sang as "Can't afford...