and, thirdly, in how far they are convinced of the justice of what has been placed before them. Should he observe, first, that his hearers do not understand him he will make his explanation so elementary and clear that they will be able to grasp it, even to the last individual. Secondly, if he feels that they are not capable of following him he will make one idea follow another carefully and slowly until the most slow-witted hearer no longer lags behind. Thirdly, as soon as he has the feeling that they do not seem convinced that he is right in the way he has put things to them he will repeat his argument over and over again, always giving fresh illustrations, and he himself will state their unspoken objection. He will repeat these objections, dissecting them and refuting them, until the last group of the opposition show him by their