"God-within the creature is known as the Atman or Purusha, the real self. The Atman is intelligence itself, is pure consciousness. The Atman is in all things, every where. The real self, the Atman remains forever outside the power of thought waves; it is eternally pure, enlightened and free- the only true, unchanging happiness. It follows, therefore, that man can never know his real self as long as the thought waves and ego-sense are being identified in order to become enlightened we must bring the thought-waves under control, so that this false identification may cease. The Gita teaches us that "Yoga is the breaking of contact with Pain". Describing the action of the thought-waves, the commentators employ a simple image the image of the lake. If the surface of a lake is lashed into waves the water becomes muddy and the bottom cannot be seen. The lake represents the mind and the bottom of the lake the Atman".