A man who had studied much in the schools of wisdom
finally died in the fullness of time
and found himself at the
Gates of Eternity.

An Angel of light approached him and said, "Go no further,
O mortal, until you have proven to me your worthiness
to enter into Paradise!"

But the man answered, "Just a minute now. First of all,
can you prove to me this is a real Heaven and not just the
wishful fantasy of my disordered mind undergoing death?"

Before the angel could reply, a voice from inside the
gates shouted:
"Let him in - he's one of us!"

(from the Sufi)
Robert Anton Wilson: Cosmic Trigger