In 1950, Mother Teresa founded the Missionaries of Charity, a religious order (or "congregation," in Roman Catholic terms) that continues to carry on charitable labors now after Mother Teresa's death. Now known as Saint Teresa of Calcutta (after being canonized by the Roman Catholic Church), the religious order she founded now has over 4,000 sisters living according to its principles. They take the usual vows of poverty, chastity and obedience as nuns, but add to that also a vow that they will give "wholehearted free service to the poorest of the poor." The Missionaries of Charity do an enormous amount of charitable service work in the world.