《礼记·檀弓下》
事过之后，他说： 我真后悔越礼行事。连办我母亲丧事我还不守礼的规定，那么还有什么事情上我会依礼而行呢？ 
曰： 吾悔之，自吾母而不得吾情，吾恶乎用吾情！ 
After things had happened, he said: I really regret acting improperly. If I did not even respect the rule of propriety while holding my mother's funeral, then will there be anything I will do in the way of propriety?