For extreme illnesses extreme treatments are most fitting.
Nature itself is the best physician.
Sometimes give your services for nothing.
Primum non nocerum. (First do no harm)
Wherever the art of Medicine is loved, there is also a love of Humanity.
Even when all is known, the care of a man is not yet complete, because eating alone will not keep a man well; he must also take exercise. For food and exercise, while possessing opposite qualities, yet work together to produce health.