Let us consider now how the dreams that we dream every night are formed. Our mind is made of vibrations, or call them "atoms", if you will. These have the property of receiving impressions. They are just like a photographic plate. They are continually receiving impressions, impressions of heat, of cold, of friends, of enemies. These impressions are stocked in the storehouse of the mind, so many thousands, so many millions of impressions, more than can be counted. When you are asleep, and your body is resting, but your mind is active, these pictures come before you just like the moving pictures on the curtain. Then when your mind is fully exhausted, deep sleep comes.