For I do not want any one to read my book carelessly. I have suffered too much grief in setting down these memories. Six years have already passed since my friend went away from me, with his sheep. If I try to describe him here, it is to make sure that I shall not forget him. To forget a friend is sad. Not every one has had a friend. And if I forget him, I may become like the grown-ups who are no longer interested in anything but figures.