A story goes like this: “Now boys,” admonished the old minister, lecturing the Bible class, “you must strive always to keep calm and never lose your tempers. You should never swear or get angry or get excited.” “But sometimes we cannot help it, sir,” said one. “It is not hard,” declared the old fellow. “I never do it. Now for example, see that big fly on my nose?” “Yes, sir,” chorused some. “It is a bee,” whispered an experienced one. “Now see this fly,”...