“Let this, I say, be our way of overpowering them, and of conducting our warfare against them; and let us, before all words, astound them by our way of life. For this is the main battle, this is the unanswerable argument, the argument from actions. For though we give ten thousand precepts of philosophy in words, if we do not exhibit a life better than theirs, the gain is nothing. For it is not what is said that draws their attention, but their enquiry is, what we do. Let us win them therefore by our life.”

John Chrysostom
388 AD