This article deals with a question that always appears when we investigate the problem of the body in Freud's theory. Is Freud a monist, a dualist or a pluralist? Our first effort is to define these terms of the philosophical lexic, paying attention to its generality. Afterwards, we study the Freudian work in order to show that his theory does not fit into these categories. On the contrary, it puts together the three terms once it works at the same time with monisms, dualisms and pluralisms.
Monism; pluralism; unconscious; trieb; etiology