 Throughout the history of ethics, many moral philosophers have been concerned with the agent’s psychology, or what motivates an agent to act. Three stand out as the most prominent foes or friends of feminists: Hobbes, Hume, and Kant. Hobbes believed that self-interest motivates all action, including moral action. For Hobbes, all of a person’s actions aim at the person’s own good as determined by that person, and rationality requires acting in ways that promote one’s own good, which, for Hobbes, amounts to acting in ways that best satisfy one’s desires. Each rational person’s strongest desire is for self-preservation, which rationality dictates should never be sacrificed. Thus self-interest or desire-satisfaction prompts action, and both morality and rationality dictate acting accordingly. While Hume agreed with Hobbes that reason by itself cannot motivate action, he disagreed with Hobbes about the motive that prompted action, believing that instead of self-interest, the feeling or sentiment of sympathy or benevolence is necessary for prompting moral action. Reason’s role is to determine the means to our ends, not set the ends themselves, which are set by sentiment. Kant believed, against Hobbes and Hume, that not only could reason itself prompt action, but that it is the source of our moral nature. Reason, for Kant, needs to master desire, rather than dictate the satisfaction of desire, in order for the agent to be autonomous (see, for example, Deigh 1992, 1–2).