“All babies are natural swimmers,” John said, lowering his two-year-old son gently over the side of the rowboat, and smiling. The child thrashed and sank. Aldo dived in and grabbed him. The baby came up coughing, not crying, and looked with pure fear at his father. John looked with dismay at his son. “He would have come up in a minute,” John said to Aldo, who was dripping and rowing. “You have to give nature a chance.”

