Andy Rooney's weekly commentaries on “60 Minutes” and his twice-weekly syndicated newspaper columns-addressing everything from deceptive cereal packaging to the existence of God-have made him America's best-known critic of the quotidian. As you might imagine, he gets a lot of letters in response to his often-iconoclastic views. As you might not expect, he writes a lot of letters, too. Now Rooney has collected the funniest, wisest, and most interesting...