“If the Spaniards were to prohibit the French from trading with the Spanish kingdoms, not for the good of Spain but to prevent the French from sharing in any profits, this would be an unjust enactment, and contrary to Christian charity. But if this prohibition cannot justly be proscribed in law, neither can it be justly carried out in practice, since an unjust law becomes inequitable precisely when it is carried into execution. And “nature has decreed a certain kinship between all men” (Dig. 1.1.3), so that it is against natural law for one man to turn against another without due cause, man is not a ‘wolf to his fellow man,’ as Ovid [actually Plautus, Asinaria 495], says, but a fellow.”