"In their attempts to get around these artificial barriers and inconsistencies, early women scientists developed a great many strategies. These tended to be of two sorts. One was the idealistic, liberal-to-radical, and often confrontational strategy of demanding that society reject all stereotypes and work for the feminist goal of full equality. This involved writing angry letters and otherwise documenting the "unfairness" of the unequal opportunities open to men and women. The most prominent and successful strategist of this school was Christine Ladd-Franklin, a graduate of the 1860s, would-be physicist turned mathematician, psychologist, and logician, who for fifty years, worked shrewdly and tirelessly for educated women. Her greatest triumph was in opening graduate schools to women in the 1890s, and thus allowing women to earn the same doctorates as men."