Quotes:Triad

H. P. Blavatsky

Triad. The ten Sephiroth are contemplated as a group of three triads: Kether, Chochmah and Binah form the supernal triad; Chesed, Geburah and Tiphereth, the second; and Netzach, Hod and Yesod, the inferior triad. The tenth Sephira, Malkuth, is beyond the three triads. [w.w.w.] The above is orthodox Western Kabalah. Eastern Occultists recognise but one triad — — the upper one (corresponding to Atmâ‐Buddhi and the “ Envelope” which reflects their light, the three in one) — and count seven lower Sephiroth, everyone of which stands for a “ principle”, beginning with the Higher Manas and ending with the Physical Body — of which Malkuth is the representative in the Microcosm and the Earth in the Macrocosm.

Source: H. P. Blavatsky, The Theosophical Glossary, art. Triad