The document discusses concepts of sight in Sophocles' play Oedipus. It explores how characters demonstrate insight or lack thereof. Oedipus does not see his own fate. The gods have foresight. Tiresias is physically blind but has prophetic insight. Both Oedipus and Jocasta exhibit mental blindness by not seeing realities. Tiresias uses predictions to make men ponder themselves, telling Oedipus he does not see the evil around him.