" Anthony and Stanton viewed Stone’s support of voting rights for black men as a betrayal of the women’s cause. They reneged on their commitment to a joint organization and announced the formation of their own national women’s suffrage organization the following week, in May 1869. Stone and a group of colleagues published a letter calling for a more comprehensive organization, but it was to no avail. By the fall, they had little choice but to form their own group. For more than two decades, they maintained their distance, working independently "

― Adam M. Grant , Originals: How Non-Conformists Move the World