After considering the historic page, and viewing the living world with anxious solicitude, the most melancholy emotions of sorrowful indignation have depressed my spirits, and I have sighed when obliged to confess, that either nature has made a great difference between man and man, or that the civilization, which has hitherto taken place in the world, has been very partial. Mary Wollstonecraft, "A Vindication of the Rights of Woman" (1792).