This paper provides a new interpretation of Plato’s account of justice as psychic health in Republic IV. It argues that what has traditionally been considered to be one single analogy is actually a more complex line of reasoning that contains various medical analogies. These medical analogies are not only different in number but also in kind. I discuss each of them separately, while providing a response to various objections.

This paper reconsiders some controversial aspects of Plato’s characterization of justice as psychic health. It rejects three prevailing interpretations of Plato’s ‘medicalization of justice’, while providing a new reading that exonerates Plato from the charges raised by his critics. I argue that Plato’s account articulates an unprecedented theory of mental health in the history of Western philosophy and medicine. This account is put forward as an alternative to the bio-medical model of mental health developed by Hippocratic doctors. Finally, I discuss (...) the practical implications of Plato’s account of justice for his ethical and political theory. (shrink)