§ 214
The instructions I have to give relative to the cure of mental diseases may be confined to a very few remarks, as they are to be cured in the same way as all other diseases, namely, by a remedy which shows, by the symptoms it causes in the body and mind of a healthy individual, a power of producing a morbid state as similar as possible to the case of disease before us, and in no other way can they be cured.
