The Ladder of Lights by William G. Gray, considered a classic in its field, is an outstanding study of the Kabbalistic Tree of Life. ".....the most original commentary on basic Kabbalistic knowledge that I have read for God knows how many years." - Israel Regardie "......beautifully presented and set in excellent marching order.....For one new to the subject, this is a fine text and an exceptionally lucid introduction to a veiled and meditative lore which is still being enlarged from year to year." - Max Freedom Long (Huna Vistas)