H. P. Blavatsky

Sephiroth. The ten emanations of Deity; the highest is formed by the concentration of the Ain Soph Aur, or the Limitless Light, and each: Sephira produces by emanation another Sephira. The names of the Ten Sephiroth are — 1. Kether — The Crown; 2. Chokmah — Wisdom; 3. Binah — Understanding; 4. Chesed‐ — Mercy; Geburah — Power; 6. Tiphereth — Beauty; 7. Netzach — Victory; 8. Hod — Splendour; 9. Jesod_Foundation; and 10. Malkuth — The Kingdom. The conception of Deity embodied in the Ten Sephiroth is a very sublime one, and each Sephira is a picture to the Kabbalist of a group of exalted ideas, titles and attributes, which the name but faintly represents. Each Sephira is called either active or passive, though this attribution may lead to error; passive does not mean a return to negative existence; and the two words only express the relation between individual Sephiroth, and not any absolute quality. [w.w.w.]

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