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 dinished his system.he showed it to other student in the school,and they love 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 booka into braille.someone read to louis while he made the dots.he copied the books of shakespeare and other writers into braille.the students read all the books and wanted more.the school did not want a fifteen-year-old boy's invention to be better than their own heavy books and would not let student read braille books.nevertheless,the students continued to read them.finally,after twenty years,the school agreed to use braille.louis braille spent the rest of his life trying to tell the world about braille.but nobody cared.louis was unlucky again. he became very