The control of one's human nature is seen similarly through the eyes of Freud in his Introductory Lectures on Psycho-Analysis and Sophocles in his Antigone; it is impossible to suppress. Yet, the two works of literature diverge in their opinions on the types of feelings that are being repressed. Sophocles portrays his belief in the theory of individualized human nature. The characters in Antigone all seem to be acting on instinct, yet their instincts all stem from different needs. Antigone's instincts tell her to bury her brother against society's instructions, simultaneously Creon's instincts instruct him to grab for power at all costs and protect his city in the same respect. On the other hand, Freud believes that everyone has the same repressed sexual instincts that run their unconscious lives.