One of my favorite stories is the true story of a young couple who had a little girl and had just returned home from the hospital with a newborn baby boy. Their little girl kept begging to go into the nursery alone with her new sibling. The parents were afraid, as they had heard stories of children being jealous of newborn siblings, and thought she might want to harm the baby.

She kept asking to be alone with him, and they said no. "Why not?" she asked. "Well, why do you want to be with him?" they inquired. "What are you going to do?"

Finally the parents decided to try it. They put an intercom in the baby's room and listened in another room as the little girl went in to see her brother alone. The parents were ready to jump up and rush in if the girl began to hurt him. They put their ears to …