Ramana from Ellam Ondre (All is One)

If you ask what that is, it is called turiya, which means the fourth state. Why is this name used? This name is proper because it seems to say the three states of your experience-waking, dream and deep sleep-are foreign to you and your true state is the fourth, which is different from these three. Should the three states, waking, dream and deep sleep, be taken to form one long dream, the fourth state represents the waking from this dream. Thus it is more withdrawn than deep sleep, also more wakeful than the waking state. Therefore your true state is that fourth one which is distinguished from the waking, dream and deep sleep states. You are that only. What is this fourth state? It is knowledge which does not particularize anything. It is not unaware of itself. That is to say, the fourth state is Pure Knowledge which is not conscious of any object, but not unconscious itself. Only he who has realized it even for a trice, has realized the Truth. You are that only.