he wanted to read more, but there were no more book.
so every evening,he tried to find a way for blind people to be able to read books.
one day,captain charles barbier, a french soldier, came to speak at the school.
barbier had invented night-writing.
this system used dots for the letters of the alphabet.
soldiers could feel the dots with their fingers and read with no light.
barbier thought night-writing could also help blind people.