Sri Aurobindo
Letters of Sri Aurobindo
Volume IV - Part 3
Fragment ID: 14723
They [people who speak of “sound and dreamless sleep”] simply mean that when they come back, they are not conscious of having dreamed. In the sleep the consciousness goes into other planes and has experiences there and when these are translated perfectly or imperfectly by the physical mind, they are called dreams. All the time of sleep such dreams take place, but sometimes one remembers and at other times does not at all remember. Sometimes also one goes low down into the subconscient and the dreams are there, but so deep down that when one comes up there is not even the consciousness that one had dreamed.