When I was a child of seven years old, my friends, on a holiday, filled my pockets with coppers. I went directly to a shop where they sold toys for children, and, being charmed with the sound of a whistle that I met by the way in the hands of another boy, I voluntarily offered and gave all my money for one. I then came home and went whistling all over the house, much pleased with my whistle, but disturbing all the family. My brothers and sisters and cousins, understanding the bargain I had made, told me I had given four times as much for it as it was worth; put me in mind of what good things I might have bought with the rest of the money; and laughed at me so much for my folly that I cried with vexation; and the reflection gave me more chagrin than the whistle gave me pleasure.