Lecture III

Now man was not yet capable of carrying out the work of which I have told you. I have explained that man's ego works upon his astral, etheric, and physical bodies. But he can only begin this work gradually. As a child needs teachers, so when man was already prepared to become an ego-bearer, he needed a stimulus on earth to enable him to advance, and there were two “stimulators.” You can think whence, from the whole cosmic evolution, they came.