Chapter 26 — Part III — The Ten Commandments
Section 579. Q. What are we to think of duels, to decide private quarrels? A. Since the decision of private quarrels belongs to government, while the duelist, instead of having recourse to law, willfully determines on an act which involves manifest danger of death both to himself and his opponent, it is evident that a duel implies three dreadful crimes-- rebellion, murder, and suicide.