We\u2019ve been quoting recently from the old children\u2019s story The Velveteen Rabbit, about a toy that\u2019s so loved by a young boy that it becomes real. This is a great metaphor for parenting in a way. Because that\u2019s what\u2019s happening to us. We made a decision to have kids many years ago and then for years that decision works on us, shaping, changing, transforming us. No part of that is more powerful than the love and energy of our children\u2014whose joy, whose innocence, whose pain, whose growth is worki...