One Sunday around 1173, in Lyons, a wealthy financier named Waldo heard a traveling singer tell the story of St. Alexis, the son of a Roman senator who fled his family, became a beggar, and took to a life of prayer and service. Moved, he hurried to talk to a theologian, who told him of Jesus’ exhortation: if you wish to be perfect, go, sell what you have, and give it to the poor. And so he did.