After a song from the chorus, in which are imbodied the doubt, the trouble, the terror which the audience may begin to feel--and here it may be observed, that with Sophocles the chorus always carries on, not the physical, but the moral, progress of the drama [345]--Creon enters, informed of the suspicion against himself which Oedipus had expressed. Oedipus, whose whole spirit is disturbed by the weird and dark threats of Tiresias, repeats the accusation, but wildly and feebly. His vain worldly wisdom suggests to him that Creon would scarcely have asked him to consult Tiresias, nor Tiresias have ventured on denunciations so tremendous, had not the two conspired against him: yet a mysterious awe invades him--he presses questions on Creon relative to the murder of Laius, and seems more anxious to acquit himself than accuse another. While the princes contend, the queen, Jocasta, enters. She chides their quarrel, learns from Oedipus that Tiresias had accused him of the murder of the deceased king, and, to convince him of the falseness of prophetic lore, reveals to him, that long since it was predicted that Laius should be murdered by his son joint offspring of Jocasta and himself. Yet, in order to frustrate the prophecy, the only son of Laius had been exposed to perish upon solitary and untrodden mountains, while, in after years, Laius himself had fallen, in a spot where three roads met, by the hand of a stranger; so that the prophecy had not come to pass. At this declaration terror seizes upon Oedipus. He questions Jocasta eagerly and rapidly--the place where the murder happened, the time in which it occurred, the age and personal appearance of Laius--and when he learns all, his previous arrogant conviction of innocence deserts him; and as he utters a horrid exclamation, Jocasta fixes her eyes upon him, and "shudders as she gazes." [346] He inquires what train accompanied Laius--learns that there were five persons; that but one escaped; that on his return to Thebes, seeing Oedipus on the throne, the surviver had besought the favour to retire from the city. Oedipus orders this witness of the murder to be sent for, and then proceeds to relate his own history. He has been taught to believe that Polybus of Corinth and Merope of Doris were his parents. But once at a banquet he was charged with being a supposititious child; the insult galled him, and he went to Delphi to consult the oracle. It was predicted to him that he should commit incest with his mother, and that his father should fall by his hand. Appalled and horror-stricken, he resolves to fly the possible fulfilment of the prophecy, and return no more to Corinth. In his flight by the triple road described by Jocasta he meets an old man in a chariot, with a guide or herald, and other servitors. They attempt to thrust him from the road--a contest ensues--he slays the old man and his train. Could this be Laius? Can