Lecture II
These matters must be the subject of exact research; only the guiding principles can be given from the spiritual world. Research will show that the structure of the substances found in the petals and leaves, for instance, is of an essentially different character from the structure of the substances found in the root or even the seed itself. There is a tremendous difference, and this leads to the distinction between a tea prepared from the petals or leaves of plants and an extract of substances found in roots or seeds. You will find that this difference is the basis for the other differences, so that the effect of a tea prepared from petals or leaves upon the human digestive system is quite different from that of an extract prepared from roots or seeds. In this way you relate the organization of the human being to the surrounding world, and everything you discover can be verified through purely physical, sense-perceptible methods. You will find, for instance, that disturbances in the transition of the chyle into the etheric organization, as it is brought about by the system of heart and lungs, will be influenced by the leaves; everything connected with the digestive tract is influenced essentially by a tea derived from petals. An extract of roots and seeds influences the wider activity that works on into the vascular system and even into the nervous system. In this way you will discover rationally the connection between what is going on within the human organism and the substances from which our store of remedies may be derived.