Barbier's system was difficult, but it gave Louis an idea. He worked night after night to make a simple system with dots. By age fifteen, he had finished his system. He showed it other students in the school, and they loved it. They called it Braille, after him. At age seventeen, Louis graduated from the school and became a teacher there. In his free time, he copied books into Braille. Someone read to Louis shile he made the dots. He copied the book of Shakespeare and other writers into Braille. The students read all the goois and wanted more.The sahool did not want a fifteen-year-old boy's invention to be better than their own heavy books and would not let students read Braille books. Nevertheless, the students continued to read them. Finally, after twenty years, the school agreed to use Braille.