English: The Kabbalistic Tree of Life with the names of the 10 Sefirot and 22 paths in Hebrew. The different colors of the lines represent the three groups of characters: red, the 3 "mother" letters; blue, the 7 "double" letters; and green, the 12 "simple" letters. The left side of the Tree of Life (which includes Binah, Geburah, and Hod) is known as the Pillar of Severity. This side tends towards discipline, control, and dominance. The right side is known as the Pillar of Mercy (and contains Chokmah, Chesed, and Netzach.) This side tends towards mercy, compassion, and “letting things be.” The left and right pillars are also known by their Hebrew names Boaz and Jachin (both of which originally stood in King Solomon’s Temple, the first Temple in Jerusalem.) The center pillar (which includes Kether, Tiphareth, Yesod, and Malkuth) is the “Pillar of Mildness.” The center pillar, also known as the Pillar of Equilibrium, tends towards harmony, balance, and unity.