from The Song of the Bird

The devil once went for a walk with a friend. They saw a man ahead of them sloop down and pick up something from the ground.
“What did that man find?” asked the friend.
“A piece of truth, ” said the devil.
‘Doesn’t that disturb you?” asked the friend.
“No, ” said the devil, ‘I shall let him make a belief out of if.”

A religious belief is a signpost pointing the way to truth. When you cling to the signpost you are prevented from moving toward the truth because you think you have it already.