e clients to be Рserved. The humbug we teachers have to practice is the front we put on of knowledge Рand expertness. It is not entirely humbug, because we usually know a little more and can Рdo a little better than our best students. But we must not let the humbug fool ourselves. РIf we do not know that our students cannot read very well, we are worse than humbugs: Рwe do not our business at all. And if we do not know that we cannot read very much Рbetter than they, we have allowed our professional imposture to deceive ourselves. РJust as the best doctors are those who can somehow retain the patient's confidence not Рby hiding but by confessing their limitations, so the best teachers are those who make Рthe fewest pretensions. If the students are on all fours with a difficult problem, the