Note (return) — Chapter XIII
Reading edition
If you ask Epicurus what a man shall do when it is clearly his immediate interest to violate the social contract, he would answer, that if your general interest is secured by always observing it, you must make momentary sacrifices for the sake of future good. But "when, in consequence of new circumstances, a thing which has been pronounced just does not any longer appear to agree with utility, the thing which was just... ceases to be just the moment it ceases to be useful." 780 So that self-interest is still the basis of all virtue. And if, by the performance of duty, you are exposed to great suffering, and especially to death, you are perfectly justified in the violation of any and all contracts. Such is the social morality of Epicurus.