Both in speaking and writing we must try as far as possible to make our words accord with the principles laid down above, and accustom ourselves to practise each principle readily, and we shall have many technical expedients to enable us to make speeches according to the rules of art in private and public suits and in conversation with others; but an orator ought to be careful not only about his words but also about his personal behaviour, regulating it according to the principles already laid down; for the manner of a man's life contributes to the persuasive influence which he exercises and to the establishment of a good reputation.