xviii. The Fourfold Man of Earth

In this area it becomes especially apparent that results such as those given above must not be built on mere inferences, on speculations such as conclusions by analogy, but must only proceed from the true research of the science of the spirit. This must necessarily be emphasized, for it happens only too easily that once they have gained some insights, zealous adherents of the science of the spirit continue to spin their ideas in empty air. It is no miracle when only phantasms are produced in this way, and, in fact, they do abound in these areas of research.