In Essential Vulnerabilities, Deborah Achtenberg contests Emmanuel Levinas’s idea that Plato is a philosopher of freedom for whom thought is a return to the self. Instead, Plato, like Levinas, is a philosopher of the other. Nonetheless, Achtenberg argues, Plato and Levinas are different. Though they share the view that human beings are essentially vulnerable and essentially in relation to others, they conceive human vulnerability and responsiveness differently.