What quality of Oedipus leads him to seek the truth, regardless of the consequences?

The quality of Oedipus that drives him to seek the truth, regardless of the consequences, is hubris. Hubris refers to excessive pride or self-confidence, which in classical literature often leads to a character's downfall. In Oedipus Rex, his hubris compels him to believe that he can outsmart the prophecies of the gods and uncover the truth about his origins and the plague afflicting Thebes. This characteristic motivates Oedipus to pursue answers and confront revelations that ultimately lead to his tragic fate. The relentless pursuit of truth, born out of his belief in his own intelligence and capability, illustrates how hubris can be both a motivating force and a source of catastrophic consequences in the narrative.