All that we "know" is what registers on our brains, so what you perceive (your individual reality-tunnel) is made up of nothing but thoughtsโas Sir Humphrey Davy noted when self-experimenting with nitrous oxide in 1819, and as Buddha noticed by sitting alone until all his social imprints atrophied and dropped away.
Robert Anton WilsonMind is a tool invented by the universe to see itself; but it can never see all of itself, for much the same reason that you can't see your own back (without mirrors).
Robert Anton WilsonEvery nervous system creates its own "reality," minute by minute - we live inside a "bubble" of neural abstractions which we identify with reality. You can make this neurological fact into conscious experience, and you will never be bored or depressed again.
Robert Anton Wilson