13. The Relationships Between Spiritual Science and Individual Academic Subjects III

But because it does not create unjustified hypotheses, but assumes realities, the ether is revealed to it in the phenomena that are usually derived from the ether itself. On the other hand, you know that where we are dealing with an ether region, in the corresponding mathematical formula, where, in the case of ponderable matter, we insert the quantity with a plus sign for heat – but only for certain heat phenomena, those of radiant heat, of flowing heat – and that for light phenomena, for certain which then appear as chemical processes, and also in the phenomena of life, since negative signs have to be inserted into the corresponding mathematical formulas for certain quantities, which are to be modified by not only inserting negative quantities, but even by assuming the radiation from a point instead of the radiation from a periphery.