“In the foregoing pages I gave you certain broad principles and outlined a new aspect of the work which I had undertaken to do for humanity—under instruction from the Hierarchy. The teaching I gave there is very abstruse; little of it can as yet be of real service to the majority of aspirants but a wide and general idea can take form and provide the immovable background for later teaching. I would have you remember that the teaching which I have given out has been intermediate in nature, just as that given by H.P.B., under my instruction, was preparatory. The teaching planned by the Hierarchy to precede and condition the New Age, the Aquarian Age, falls into three categories:
1. Preparatory, given 1875-1890...written down by H.P.B.
2. Intermediate, given 1919-1949...written down by A.A.B.
3. Revelatory, emerging after 1975...to be given on a worldwide scale via the radio...