The Law of Similars

Organon Aphorism §24

There remains, therefore, no other mode of employing medicines in diseases that promises to be of service besides the homoeopathic, by means of which we seek, for the totality of the symptoms of the case of disease, a medicine which among all medicines (whose pathogenetic effects are known from having been tested in healthy individuals) has the power and the tendency to produce an artificial morbid state most similar to that of the case of disease in question.

Samuel Hahnemann, Organon of Medicine, 6th edition (Boericke translation, public domain).

Expert explanation & clinical interpretation for this aphorism are coming soon.