Israel on Tree of life (Kabbalah)

“All the Sephiros, as these emanations are called, below that named the Crown are given masculine and feminine attributions, and the activity between male and female Sephiros in reconciliation is a "child," so to speak; a neutral Sephirah acting in equilibrium. Thus the Tree of Life, comprising these ten emanations, develops from the highest abstraction to the most concrete material in several triads of potencies and spiritual forces. Male, female and child; positive, negative and their resultant commingling in a third reconciling factor.”

“The Qabalah taken in its traditional and literal form—as contained in the Sepher Yetsirah, Bes Elohim, Pardis Rimonim, and Sepher haZohar—is either mostly unintelligible or, at first sight, apparent nonsense to the ordinary "logical" person. But it contains as its ground plan that most precious jewel of human thought, that geometrical arrangement of Names, Numbers, Symbols, and Ideas called "The Tree of Life". It is called most precious, because it has been found to be the most convenient system yet discovered of classifying the phenomena of the Universe and recording their relations, whereof the proof is the limitless possibilities for analytic and synthetic thought which follow the adoption of this schema.”