How does his pride affect Oedipus' actions in Sophocles' Oedipus the King?
In Sophocles' Oedipus the King, the title character is initially portrayed as someone who cares about his people and is willing to do whatever it takes to help rid them of the plague that affects the people of Thebes.
Unfortunately, Oedipus is stirred to anger when he finds himself being accused of the crimes he is trying to solve. In his conversation with Teiresias, Oedipus' pride appears to burst forth when he wonders where Teiresias was when the Sphinx vexed the Thebans. When the Thebans needed prophetic advice, Oedipus declares that it was he, not Teiresias, who came forward and solved the monster's riddle. So, in this instance, I would say that Oedipus' pride contributes to his anger, which evokes further harsh words and more clear accusations of atrocities from Teiresias.
This strikes me as the instance in the play in which Oedipus exhibits what we moderns would consider pride.