Organon §214
Treat mental and emotional diseases in the same way as other diseases.
Therefore, what I have to teach about the cure of the mental and emotional diseases can be confined to a very few remarks, since these diseases are to be cured in the same manner as all the other diseases (and not at all differently), that is, by means of a remedy that offers a disease potence as similar as possible to a given case of disease (with respect to the remedy's symptoms that were brought to light in the body and soul of the healthy prover).