In ordinary life we experience two planes, the physical plane in which we experience through the eyes, the ears, and all the organs of the body; and the mental plane, the plane of thought and feeling. When we are asleep and all our organs are resting, we see ourselves just as we appear when awake in various surroundings. This shows us that we have another being besides this physical being and other eyes besides these eyes. Whilst we are dreaming, the dream is real to us. When we awaken, we think, "I was there and now I am here. If what I saw in the dream had been real, it should all still be here now that I am awake; but it is all gone." We distinguish the dream as a dream by its contrast with the waking condition.