Why does Oedipus not believe that he killed Laius?

Answer 1

That he thinks he knows himself and his life very well is why Theban King Oedipus at first doesn't believe himself to be the killer of Theban King Laius. He knows of having committed a murder on his way to Thebes. But he finds it unbelievable that his surly victim could have been royal. Likewise, he finds it unbelievable that a king would have behaved so violently and stupidly as to end up dying in a street brawl over a right of way at a crossroads.