34. Whoever uses known healing herbs will certainly always feel their effect. But no healing herb exists which is able to absorb all the healing substance from the sunrays. Every plant absorbs only what is homogeneous to it and cannot absorb anything else, since its structure is such that it can absorb from the sunlight only what is required by it.
35. If a physician were able to establish from a sick soul exactly which life-specifics have become weak within it, or are even lacking, and knew also the little herb which contains these particular life specifics, he would definitely be able to restore a sick soul or, which is the same, a sick person, to complete health.