The knowledge is indispensable for a true practitioner of healing art, the physician who aspires to treat judiciously and rationally.
Dr Hahnemann has outlined the peculiarities of knowledge that a physician should possess.
APHORISM 3:
If the physician clearly perceives what is to be cured in diseases, that is to say, in every individual case of disease (knowledge of disease, indication), if he clearly perceives what is curative in medicines, that is to say, in each individual medicine (knowledge of medicinal powers), and if he knows how to adapt, according to clearly defined principles, what is curative in medicines to what he has discovered to be undoubtedly morbid in the patient, so that the recovery must ensue- to adapt it, as well in respect to the suitability of medicine most appropriate according to its mode of action to the case before him (choice of remedy, the medicine indicated), as also in respect to the exact mode of preparation and quantity of it required (proper dose) and the proper period for repeating the dose; if, finally, he knows the obstacles to recovery in each case and is aware how to remove them, so that restoration may be permanent; then he understands how to treat judiciously and rationally and he is a true practitioner of healing art.
APHORISM 4:
He is likewise a preserver of health if he knows the things that derange health and cause disease and how to remove them from persons in health.
