The highest mystical teachings end, and can only end, in proclamation of the One Reality or, more properly, the Ineffable, the One-without-a-Second. Nothing much can really be affirmed about It other than that It IS. But revelation cannot end with this affirmation. For man finds himself subject to the necessities of a physical body living in a physical environment. The higher laws governing such earthly existence affect him vitally. He ought not to remain ignorant of them, if he is to live in harmony, not conflict, with these laws.
-- Notebooks Category 26: World-Idea > Chapter 4: True Idea of Man > # 160