III. The Supersensible Being of Man

And if someone says this could all be an illusion, hallucination, then we would reply that there are also certain types of philosophy which maintain that everything we see is only a creation of our eyes. We have only to think of Schopenhauer's statement “The world is only idea.” This had such an effect on one person that he told Goethe that when he closed his eyes the sun was not there—A more recent scientist who is by no means averse to including the more marginal areas of research in his work, commented that we have long since discovered that the man is dead and can no longer open his eyes, yet the sun is still moving through the universe.