In the sixth year the lawyer devours over six hundred volumes of language, philosophy, and history. Why do you think he is so motivated?

sixth year the prisoner began zealously studying languages, philosophy, and history. He threw himself eagerly into these studies -- so much so that the banker had enough to do to get him the books he ordered. In the course of four years some six hundred volumes were procured at his request. It was during this period that the banker received the following letter from his prisoner: