Dick was not old, but he does not have much hair. His wife Emma has thick, beautiful black hair. They have a son. His name is Peter, and he is five years old. One day, Dick was reading a book in his study. Peter looked at his father for a long time and then said to his mother, “Why does Papa have so little hair, Mama?” Emma laughed and said, “ He has little hair because he thinks a lot. He's a very clever man.” Peter looked at his mother's thick black hair for a few seconds and then said, “Then I know why you have so much hair.”