Since its revival in the twentieth century, virtue ethics has been developed in three main directions: Eudaimonism, agent-based theories, and the ethics of care. Eudaimonism bases virtues in human flourishing, where flourishing is equated with performing one’s distinctive function well. In the case of humans, Aristotle argued that our distinctive function is reasoning, and so the life “worth living” is one which we reason well. An agent-based theory emphasizes that virtues are determined by common-sense intuitions that we as observers judge to be admirable traits in other people. The third branch of virtue ethics, the ethics of care, was proposed predominately by feminist thinkers. It challenges the idea that ethics should focus solely on justice and autonomy; it argues that more feminine traits, such as caring and nurturing, should also be considered.