In his public lectures the yogi master Paramahansa Yogananda often made observations about the nature and purpose of dreams:
Dreams are actually lessons in the working of the Cosmic Consciousness. They come to man for a reason; their purpose is to awaken in him a realization of the dream nature of the universe and its method of operation.
The substance of a dream is held in materialization by the subconscious thought of the dreamer. When that cohesive thought is withdrawn in wakefulness, the dream and its elements dissolve.
This heavy, earthy clod, floating in space, is a dream of God. He made all things out of His consciousness, even as man in his dream consciousness reproduces and vivifies a creation with its creatures.
From the Nature of The Physical Mind–Sir Arthur Eddington:
The frank realization that physical science is concerned with a world of shadow is one of the most significant advances.
To put the conclusion crudely, the stuff of the world is mind-stuff…

