Kant explicitly connected race to personhood, which Mills has identified as the racial contract’s moral and legal standard for equal inclusion in society. Although not the first to connect race, rationality, and political rights, Kant was the first of the major social contract theorists to say that membership in society should depend
entirely on rationality (rather than historical or cultural factors). Essentially, he argued that non-white people were incapable of rational thinking and were therefore subhuman and undeserving of basic human rights and liberties. This is a far more extreme position than his predecessors’. In Hobbes’s worldview, white people could fall back into the state of nature. Locke, too, implied that non-white people could theoretically start obeying natural laws. And Rousseau suggested that it would be
possible for non-Europeans to have metallurgy and agriculture—he just ignored the fact that they actually did. Kant, then, was seemingly the first to say that non-white people were
essentially and
unalterably inferior to white people. Whereas Hobbes, Locke, and Rousseau’s theories imply that white people can “civilize” nonwhite people, Kant’s implies that non-white people would never be able to overcome their inferiority or achieve equality with white people. Beyond laying the foundation for modern genocidal race politics, Kant’s theory of race also shows how racism gradually solidified itself over time, transforming from a vague sense of European superiority into a rigid hierarchy of absolute categories.