Lecture I
I said that we need a substructure for the things that are to lead us to the heights of spiritual contemplation. Such a substructure as has been put forward here may appear to many as somewhat abstract; still, we shall need it. And I think I have tried to make it so easy that what I have said is clear enough. I should like particularly to emphasise that through such simple considerations as these one can get an idea of where the boundary lies between the realm of the Spirits of Form and the realm of the Spirits of Movement. But whether one comes to such an idea is intimately connected with whether one is prepared to admit thoughts of things-in-general, or whether one is prepared to admit only ideas or concepts of individual things—I say expressly “is prepared to admit”.