For one country is different from another; its earth is different, as are its stones, wines, bread, meat, and everything that grows and thrives in a specific region.
The dreams which reveal the supernatural are promises and messages that God sends us directly: they are nothing but His angels, His ministering spirits, who usually appear to us when we are in a great predicament.
The art of healing comes from nature, not from the physician. Therefore the physician must start from nature, with an open mind.
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.
What the eyes perceive in herbs or stones or trees is not yet a remedy; the eyes see only the dross.
Dreams must be heeded and accepted. For a great many of them come true.