Strict, uncompromising values and discipline are what makes children raised by Chinese parents successful. That's the message of Battle Hymn of the Tiger Mother, the controversial parenting book by Yale Law professor Amy Chua, which espouses punishingly hard work that yields excellence, which in turn yields satisfaction. The success of this strategy is hard to dispute. Older daughter Sophia is a piano prodigy who played Carnegie Hall when she was 14 or so. The second, more