Once a disease has entered the body, all parts which are healthy must fight it: not one alone, but all. Because a disease might mean their common death. Nature knows this; and Nature attacks the disease with whatever help she can muster.
Every physician must be rich in knowledge, and not only of that which is written in books; his patients should be his book, they will never mislead him.
If we want to make a statement about a man’s nature on the basis of his physiognomy, we must take everything into account; it is in his distress that a man is tested, for then his nature is revealed.
