One late autumn night, the disciple awoke crying. So the master asked the disciple,
"Did you have a nightmare?"
"Did you have a sad dream?"
"No," said the disciple. "I had a sweet dream."
"Then why are you crying so sadly?"
The disciple wiped his tears away and quietly answered,
"Because the dream I had can't come true."
Taken from a Bittersweet Life http://www.imdb.com/title/tt0456912/