Louis Braille was a French inventor born in 1809 who became blind at a young age. He developed a system of reading and writing for the visually impaired, which uses raised dots to represent letters and numbers. This system, known as Braille, allows blind individuals to read books, signs, and other written materials independently. Braille's invention transformed the lives of many people with visual impairments, giving them access to education and information. Despite facing challenges and limited recognition during his lifetime, his work has had a lasting impact, and today, Braille is used worldwide, helping millions to communicate and learn.