M. Tullius Cicero, De Officiis
Walter Miller, Ed.

[50] But, as I said above, cases¹ often arise in which expediency may seem to clash with moral rectitude; and so we should examine in carefully and see whether their conflict is inevitable or whether they may be reconciled. The following are problems of this sort: suppose, for example, a time of dearth and famine at Rhodes, with provisions at fabulous prices; and suppose that an honest man has imported a large cargo of grain from Alexandria and that to his certain knowledge also several other importers have set sail from Alexandria, and that on the voyage he has sighted their vessels laden with grain and bound for Rhodes; is he to report the fact to the Rhodians or is he to keep his own counsel and sell his own stock at the highest market price? I am assuming the case of a virtuous, upright man, and I am raising the question how a man would think and reason who would not conceal the facts from the Rhodians if he thought that it was immoral to do so, but who might be in doubt whether such silence would really be immoral.