This chapter reconstructs what Frederick Douglass thought about human nature to deepen peoples understanding of the foundations of his political morality and to counter criticisms of liberal views of human nature. It lays out the base critiques of the liberal view of human nature in modern Western political thought and shows how Douglass viewed the competing tendencies of human beings in order to form a nuanced idea of human nature. Going into the debates in the liberal community, it cites the differing opinions of Thomas Jefferson, Reinhold Niebuhr, and John Locke. With a focus on the dualities that make up Douglass’s view on the subject, this chapter shows how his view shaped his experiences and the way he interacted with the world. The dynamism that makes up Douglass’s idea of human nature makes it a viewpoint to be taken seriously and reflects the tensions inherent within the subject.