He wondered how he could ever have thought of the planets, even of the Earth, as islands of life and reality floating in a deadly void. Now with a certainty which never after deserted him, he saw the planets - as mere holes or gaps in the living heaven - excluded and rejected wastes of heavy matter and murky air, formed not by addition to, but by subtraction from, the surrounding brightness.
C. S. LewisAs for all I can tell, the only difference is that what many see we call a real thing, and what only one sees we call a dream.
C. S. Lewis