"That pure and equanimous state which is devoid of ego-sense and non-ego-sense, of the real and the real, and which is free, is known as turiya (the fourth state). It is the state of the liberated sage. It is the unbroken witness consciousness. It is different from the waking and the dreaming states, which are characterized by movement of thought; it is different from the deep sleep state, which is characterized by inertia and ignorance. When the ego-sense is abandoned, there arises the state of perfect equilibrium in which the turiya manifests itself."