Lauren HillWalnut Cove, North Carolina, United StatesJack RiggsMorgantown, West Virginia, United States “… as need, the mother of all inventions, taught them …”— Thomas Hobbs, from Leviathan Helen Keller is reputed to have said, “We the blind are as indebted to Louis Braille as mankind is to Gutenberg.”1 The life of Louis Braille (1809–1852), complete…