Reality is what you can get away with. - Robert Anton Wilson

"All that we "know" is what registers on our brains, so what you perceive (your individual reality-tunnel) is made up of nothing but thoughts — as 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."

Believe it possible that you can float off the ground and fly by merely willing it. See what happens.

"If I am so fortunate as to be listening to the Hammerklavier sonata, the only correct answer, if you ask me suddenly, "Who are you?" would be to hum the Hammerklavier."