Justice is immortal, eternal, and immutable, like God himself; and the development of law is only then a progress when it is directed towards those principles which, like him, are eternal; and whenever prejudice or error succeeds in establishing in customary law any doctrine contrary to eternal justice, it is one of the noblest duties, gentlemen ... to show that an unjust custom is a corrupt practice, an abuse; and by showing this, to originate that change, or rather development in the unwritten, customary law, which is necessary to make it protect justice, instead of opposing and violating it.