Martin Luther

Thus we have the Ten Commandments, a compend of divine doctrine, as to what we are to do in order that our whole life may be pleasing to God… Therefore it is not in vain that it is commanded in the Old Testament to write the Ten Commandments on all walls and corners, yes, even on the garments, not for the sake of merely having them written in these places and making a show of them, as did the Jews, but that we might have our eyes constantly fixed upon them, and have them always in our memory, and that we might practice them in all our actions and ways, and every one make them his daily exercise in all cases, in every business and transaction, as though they were written in every place wherever he would look, yea, wherever he walks or stands. Thus there would be occasion enough, both at home in our own house and abroad with our neighbors, to practice the Ten Commandments, that no one need run far for them.