I read this yesterday and I still don't know what to think about it.
"...The fantastic is not to be equated with the imaginary. But a powerful imagination working on reality will discover that the frontier between the marvelous and the actual - between the visible and the invisible Universe, if you wish - is a very fine one. There may be other Universes parallel to our own." The Morning of the Magicians by Louis Pauwels & Jacques Bergier