Voltairine de Cleyre (1866–1912) was an American anarchist writer and feminist, prolific in her opposition to the state, marriage, and the domination of religion in sexuality and women's lives. She began her activist career in the freethought movement, initially drawn to individualist anarchism but evolved through mutualism to an "anarchism without adjectives." Emma Goldman described her as "the most gifted and brilliant anarchist woman America ever produced".