Lucretia Mott's commitment to ending slavery and securing rights for women became the defining features of her life. A devout Quaker whose activism proved unsettling to some members of her faith, Mott assumed a highly visible role in the abolitionist movement. After joining William Lloyd Garrison at the launch of the American Anti-Slavery Society in 1833, she helped to found Philadelphia's Female Anti-Slavery Society. Her concern for women's rights was a natural outgrowth of her abolitionist efforts, and in 1848 Mott and Elizabeth Cady Stanton organized the convention at Seneca Falls, New York, that gave birth to the women's suffrage movement.