Barbier's system was difficult, but it gave Lousi 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 to 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 while he made the dots. He copied the books of shakespeare and other other writers into braille.