“Some of her best friends protested [Grimké speaking in mixed gatherings of men and women]. It was not "proper," nor "right," for a woman to attempt to instruct a man. But Angelia Grimke had gone far beyond the point where propriety weighted when it was a question of humanity. She held that "Whatever is morally right for a man to do is morally right for a woman to do. I recognize no rights but human rights."”