a b s t r a c tRetracing the primary common aspects between anthropological and psychoanalytic thought, in this article, we will further discuss the main common points between the notions of the unconscious according to Carl Gustav Jung and Claude L evi-Strauss, taking into account the thought of Erich Neumann. On the basis of very simple elementary logic considerations centered around the basic notion of the separation of opposites, our observations might be useful for speculations on the possible origins of rational thought and hence on the origins of consciousness. k e y w o r d s : analytical psychology, structural anthropology, unconscious, archetype, classical logic In the beginning, all the things were together; then, it came the mind ( o υοὓf) and set them in order -Anaxagoras of Clazomenae (Diogenes Laertius, Lives and Opinions of Eminent Philosophers, Book 2, Chap. III) Carl Gustav Jung and Claude L evi-Strauss (1908-2009) were two of the greatest thinkers and scholars of the last century. The former was an eminent psychiatrist and psychoanalyst, the first pupil of Sigmund Freud and then the founder of a new school of psychoanalytic thought called analytical psychology. The latter was an eminent anthropologist and ethnologist, as well