A man of Zan asked the disciple Wû-lû, saying, 'Is an observance of the rules of propriety in regard to eating, or eating merely, the more important?' The answer was, 'The observance of the rules of propriety is the more important.'
'Is the gratifying the appetite of sex, or the doing so only according to the rules of propriety, the more important?' The answer again was, 'The observance of the rules of propriety in the matter is the more important.'
The man pursued, 'If the result of eating only according to the rules of propriety will be death by starvation, while by disregarding those rules we may get food, must they still be observed in such a case? If according to the rule that he shall go in person to meet his wife a man cannot get married, while by disregarding that rule he may get married, must he still observe the rule in such a case?'~ James Legge translation via nothingistic.org ~
Go here to read the introductory post to this serialized version of the Works of Mencius.