The Sufi, by learning the greatest of all morals, which is love, arrives at the stage of self-denial, wherein one liberates oneself from all earthly morals. Mysticism has several aspects but the Sufi strives towards the path of truth, its ultimate goal. The truth of the Sufi is the one truth which is common to all religions and philosophies, and in the realization of which one finds one's salvation, or Najat. Sufism, being the first brother/ sisterhood of purity, has been known under different names, such as that of the Brothers of Purity, the Knights of Purity, the Brotherhood of the Cave, on which initiative several other institutions have established kinships under different names.