§ 215
Almost all the so-called mental and emotional diseases are nothing more than corporeal diseases in which the symptom of derangement of the mind and disposition peculiar to each of them is increased, while the corporeal symptoms decline (more or less rapidly), till it a length attains the most striking one-sidedness, almost as though it were a local disease in the invisible subtle organ of the mind or disposition.
Please explain me aphorisme 215 to 219