... purgation. Bearing in mind Dr. Johnson's advice to Boswell, on a certain memorable occasion, we should at least try to clear our minds of cant. Many years ago, but only shortly before his death, Richard Cobden said in one of his truth-telling deliverances to his Rochdale constituents—I really believe I might be Prime Minister. If I would get up and say you are the greatest, the wisest, the best, th...