Красиво излагает один из крупнейших математиков современности

" Two semi-transparent mirrors: one hides the depth of your mind behind itself, the other screens the universe from you.

Multiple reflections of light patterns overwhelm you. Are these red splashes on the screen smoldering remains of a dead galaxy millions of light years away or are they your mind's eye dazzled by glowing embers of reptilian fears and desires, million years old, in a hidden chamber of your brain?

...

Painfully, with an effort, almost as if in a dream, the symbols, you recognize, are words and the mirrors are books. You start reading and your conversation with the Universe begins."