We showed them that reason itself teaches us to avoid evil and to do good, and that this is so deeply implanted in the hearts of men, that all have the knowledge of the divine law from nature, and from God the Author of nature, before they receive any external instruction on the subject. If any doubts were entertained on the matter, an experiment might be made in the person of a man without any instruction, living in absolute solitude, and in entire ignorance of the laws of his country. Such a man, ignorant of and a stranger to all human teaching, if he were asked whether it were or were not criminal to kill, to steal, or to commit the other actions forbidden by the law of God, and whether it were right to abstain from such actions, then, I say, this man, so fundamentally without all human education, would most certainly reply in such a manner as to show that he was by no means without knowledge of the divine law. Whence then must he be supposed to have received this knowledge, but from God Himself, the Author of nature? And if this knowledge is seen among barbarians, what must be the case with civilized and polished nations? This being so, it necessarily follow that before any laws were made by men the divine law existed innate in the hearts of all men. The converts were so satisfied with this reasoning, as to see no further difficulty; so that this net having been broken, they received from us with a glad heart the sweet yoke of our Lord.
