The play oedipus opens with the following speech by oedipus: "… children,/ i would not have you speak trough messengers, / and therefore i have come myself to hear you- / i, oedipus, who bear the famous name. / (to a priest.) you, there, since you are the eldest in the company, / speak for them all, tell me what preys upon you." what does oedipus mean when he says, "tell me what preys upon you":