This I do partly mentally and partly by talking till I correct the wrong impressions and establish the truth, and the truth is the cure. . . . A sick man is like a criminal cast into prison for disobeying some law that man has set up. I plead his case, and if I get the verdict, the criminal is set at liberty. If I fail, I lose the case. His own judgment is his judge, his feelings are his evidence. If my explanation is satisfactory to the judge, you will give me the verdict. This ends the trial, and the patient is released.