Quite a lot has been written on the subject of morality and ethics since Aristotle's time. Orders of magnitude more than had ever been produced at the time he w

Quite a lot has been written on the subject of morality and ethics since Aristotle's time. Orders of magnitude more than had ever been produced at the time he was alive, in fact. I'm not convinced his Nicomachean Ethics are as definitive as your comment seems to imply. If what you're trying to say is that anyone can learn to become ethical, then that's a reasonable opinion. But I don't think citing Aristotle usefully refutes the parent commenter's point about people either having morality or not having it, because Aristotle hardly settled the matter on any major dilemma in philosophy. Furthermore, Aristotle's Ethics go on about "right" education quite a bit - to the point that you can reasonably conclude people can't become ethical if it's not instilled in them early enough on in their life.