Someone asked Yunmen, "What is Chan?"
  Yunmen replied, "That's it!"
  Then they asked, "What is the Dao?"
  Yunmen replied, "Okay!"
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  "What is the Dao?"
  Yunmen replied, "To break through this word."
  "What is it like when one has broken through?"
  "A thousand miles, the same mood."
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  Someone asked Yunmen, "What is Chan?"
  Yunmen said, "Is it all right to get rid of this word?"

-from Zen Master Yunmen, Urs App, trans