Jose "Pepe" Mujica, president of Uruguay, is known for his frugal ways. Last year, he earned the nickname of the "world's poorest president". when he revealed that he donates 90 percent of his salary to charitable causes (Mujica earns $12,500 a month, and only keeps $1,250 for himself.). He's a good role model with wise, enduring values, and an inspiration for people around the world.