Human being is the soul. We exist to act rationally, and nature exists to produce and support rational beings. Reason is therefore Godlike, divine.
Human nature is marred.
Free will becomes the central feature of Human nature. The primary battle is Spirit vs Flesh, to control free will. Too strong association of reason with masculinity, viewing women as emotional, not rational. If reason is human nature, then women are not human. Power was associated with natural superiority, which was then used to justify domination over others.