Expediency
ALICE A. BAILEY: Esoteric Astrology, page
420: “These energies [Life, Quality and Appearance] change within themselves and sometimes one will strike the dominating note and sometimes another; sometimes a secondary energy will become a major conditioning force and sometimes the lesser expression will come to the top and become, for the cycle, the outstanding characteristic of the triangle. Such cosmic events are governed by a great Law of Expediency, evoked by the evolutionary process …”