 In Book I of Plato’s Republic, Cephalus defines ‘justice’ as speaking the truth and paying one’s debts. Socrates quickly refutes this account by suggesting that it would be wrong to repay certain debts—for example, to return a borrowed weapon to a friend who is not in his right mind. Socrates’ point is not that repaying debts is without moral import; rather, he wants to show that it is not always right to repay one’s debts, at least not exactly when the one to whom the debt is owed demands repayment. What we have here is a conflict between two moral norms: repaying one’s debts and protecting others from harm. And in this case, Socrates maintains that protecting others from harm is the norm that takes priority.