The Pythagorean Tetraktys or Tree of Life
  This Tree of Life is nothing more than the Pythagorean Tetraktys expressed in an alternate form that consists of ten points arranged into four dimensionally significant shapes―a point, a line, a plane(or triangle); and a solid(or tetrahedron). A second variation of this diagram demonstrates visually why it is referred to in its kabbalistic incarnation as the Tree of Life. This second version is in fact a cross between the Egyptian hieroglyph ankh, or “life,” and the symbol for Venus, the goddess of Love. In the system due to Pythagoras, the upper sphere above Saturn is that of the fixed stars. In the Qabbalah(or kabbalah), it is the zodiac, so that, again, we are left with an extra object

 The Pythagorean Tetraktys or Tree of Life

  This Tree of Life is nothing more than the Pythagorean Tetraktys expressed in an alternate form that consists of ten points arranged into four dimensionally significant shapes―a point, a line, a plane(or triangle); and a solid(or tetrahedron). A second variation of this diagram demonstrates visually why it is referred to in its kabbalistic incarnation as the Tree of Life. This second version is in fact a cross between the Egyptian hieroglyph ankh, or “life,” and the symbol for Venus, the goddess of Love. In the system due to Pythagoras, the upper sphere above Saturn is that of the fixed stars. In the Qabbalah(or kabbalah), it is the zodiac, so that, again, we are left with an extra object

(via blackamulet)