Martin Luther had not planned to get married, but former nun Katharina von Bora convinced him it would be a good idea to marry her. Due to her moderately wealthy background and a household license to brew and sell beer, she was able to support Luther financially. Martin Luther himself taught that "the wife should stay at home and look after the affairs of the household as one who has been deprived of the ability of administering those affairs that are outside and concern the state…." John Calvin agreed that "the woman's place is in the home."