Oedipus Rex reveals the prophecy which caused him to leave Corinth (791-93): "that I was fated to lie with my mother," "and show to daylight an accursed breed" "which men would not endure, and I was doomed" "to be murderer of the father that begot me." The implication of Laius's oracle is ambiguous. One interpretation considers that the presentation of Laius's oracle in this play differs from that found in Aeschylus's Oedipus trilogy produced in 467 BC. Helaine Smith argues: Sophocles had the option of making the oracle to Laius conditional ("if" Laius has a son, that son will kill him) or
Oedipus Rex lead him to kill his father and marry his mother. Oedipus "chooses" not to return to Corinth after hearing the oracle, just as he chooses to head toward Thebes, to kill Laius, to marry and to take Jocasta specifically as his bride; in response to the plague at Thebes, he "chooses" to send Creon to the Oracle for advice and then to follow that advice, initiating the investigation into Laius's murder. None of these choices are predetermined. Another characteristic of oracles in myth is that they are almost always misunderstood by those who hear them; hence Oedipus's misunderstanding the significance