Plato's Crito is a dialogue depicting a conversation between Socrates.and his friend Crito in prison, shortly before Socrates' execution. Critourges Socrates to escape, emphasizing the negative consequences for Crito and other friends if Socrates remains. Socrates, however, refuses, arguing that escaping would violate his moral principles and break a social contract with Athens. He believes it is always unjust to return evil for evil, and that even the threat of death does not justify compromising his commitment to justice. The dialogue explores themes of justice, civic duty, and the importance of upholding one's moral principles even in the face of adversity.