You are the one light which unites all the sensory activities. The eyes cannot hear, the ears cannot see, the nose cannot touch. None of them can duplicate each of those activities yet behind all of them is one common radiance consciousness. Third point, most important, is waking dreaming deep sleep. Sessation of activity of senses but mind goes on active, dream world. All three words appear to you the consciousness. They come and disappear in front ofyou the consciousness. This is what he is trying to point out.