Oedipus was the child of Jocasta and King Laius who was taken to the mountain by a shepard to be killed so the omen of the god apollo that Laius' son would kill him and lay with Jocasta would not come true. Oedipus was the weakest of his life at this point. If it has not been for the shepard spairing his life and giving him to Polybus to raise as his own Oedipus would have died. Man walks on 2 feet when he has matured. This is a metaphor for Oedipus when he reaches adulthood and leaves Corinth to escape the oracle. Oedipus meets up with a band of travelers and in a rage kills them. Inadvertently Oedipus has killed his own father. Oedipus then answers the riddle of the sphinx and becomes king of Thebes. By becoming king of Thebes he marries Jocasta the Queen of thebes and his own mother. Many years later after bearing children with Jocasta a plague kills many of the inhabitants of Thebes. Oedipus is told by the gods to find the killer of Laius. He is very dilligent in the inquiriy and finally comes to the horrible truth that he himself is the murderer. Jocasta kills herself at the horrible realization that she has layed with her son and Oedipus puts out his eyes at finally seeing the truth. This fulfills the final part of the Sphinx's riddle for Oedipus will have to walk with a cane for the rest of his life because of his blindness, this will give him the 3 feet which man walks with at the end of his years. Oedipus used his intellect and diligence to answer the riddle of the Sphinx. Many of the most intelligent young men of thebes has been killed attempting to answer the riddle but Oedipus proved his intelligence superior to theirs. Oedipus uses the same intelligence and perseverence to find the killer of Laius. He does not give up his search even when Jocasta warns him to stop and let the matter rest. He calls the shepard and interrogates him till he discovers the horrifying truth that he is the killer.