At the start of the 20th century, fathers were still very authoritarian. In the Oedipal myth, Freud saw the father as a potent figure, castrating the yong boy's sex and his desire for his mother. Nowadays, psychoanalysts live in a society in which fathers, far less authoritarian, look upon girls and boys as persons with whom discussions of life projects can take place. Taking into account this culture mutation, the author offers another definition of Oedipus in the unconscious discourse.