I believe that Sophocles main objective in the play was to convey the idea of knowing yourself. World peace would be more attainable if everyone knew themselves better. World peace requires many leaders to agree on a common set of regulations. However, it is necessary for individuals to have inner peace before they can achieve peace with others. How is it possible for us to achieve peace if everyone is selfish and greedy? If people calm down their own minds, then they will be more willing to listen to the ideas of others. There are two kinds of people in the world. Proactive people respond to situations with value-based choices. On the other hand, Reactive people respond according to the feelings and attitudes of others. Knowing the self helps people become more proactive because it creates peace within individuals. Every problem stems from the mind. When people are at peace with themselves, they act with more composure and think clearly. People that lack inner peace are often more reactive to the actions of others. World peace would be easier to attain if everyone was proactive. A person who is not affected by the reactions of others can make clearer decisions. This is the essense of Sophocle's message. Oedipus only gained wisdom after he blinded himself. We must not be distracted by the sensory world. Instead we should focus on ourselves.