The Japanese master Nan-in gave audience to a professor of philosophy.  
  Serving tea, Nan-in filled his visitor's cup, and kept pouring. The  professor watched the overflow until he could restrain himself no longer: "Stop!  The cup is over full, no more will go in."
Nan-in said: "Like this cup, you are full of your own opinions and speculations. How can I show you Zen unless you first empty your cup."
Nan-in said: "Like this cup, you are full of your own opinions and speculations. How can I show you Zen unless you first empty your cup."
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Sreesha