2. Consciousness in Sleeping and Waking States

It is quite natural, in considering the problem of waking and sleeping, to concern ourselves with questions of the difference involved in the two states of consciousness. For we have certainly learned from a great variety of studies that we are here dealing with different states of consciousness, so that the question of consciousness is the all-important one here. We must realize that our most important concern in dealing with this question is to base it on the matter of consciousness. We will have to ask ourselves what the real difference is between the waking and the sleeping states.