Sarah Grimke is categorized as not only an abolitionist but also a feminist because she challenged the Society for Friends, which touted women's inclusion but denied her. It was through her abolitionist pursuits that she became more sensitive to the restrictions on women. She so opposed being subject to men that she refused to marry. Both Sarah and Angelina became very involved in the anti-slavery movement and published volumes of literature and letters on the topic. When they became well known, they began lecturing around the country on the issue. At the time women did not speak in public meetings, so Sarah was viewed as a leader in feminist issues. She openly challenged women's domestic roles.