The Master kept scraping a brick against the floor of the room where his disciple sat in
At first the disciple was content, taking this to be a test of his powers of concentration.
But when the sound became unbearable he burst out, “What on earth are you doing?
Can’t you see I am in meditation?”
“I’m polishing this brick to make a mirror out of it,” said the Master.
“You’re crazy! How can you make a mirror out of a brick?”
“No crazier than you! How can you make a mediator out of the self?”