Arunachalam Muruganantham

Arunachalam Muruganantham invented a simple method to produce low-cost sanitary pads in India. It took 4.5 years, his wife and mother left, and he was expelled from his village. He said: "Luckily I'm not educated. If you act like an illiterate man, your learning will never stop. You have no fear of the future".