
A sick professor went to visit a famous Zen master for solution to his mental and physical problems. While the master quietly served tea, the professor talked on how vast knowledge he acquired from many spiritual, scientific, social, and political books - how many places he has visited - how many wise men he met and so on.
The master poured the visitor's cup to the brim, and then kept pouring.
The professor watched the overflowing cup until he could no longer restrain himself.
"It's overfull! No more will go in!" the professor blurted.
"You are like this cup," the master replied, "How can I show you the way unless you first empty your cup?"
