A scholar was visiting an old monk. The monk filled the scholar’s teacup full, but kept on pouring. The scholar finally exclaimed, “It is full. No more will go in!” “Like this cup,” said the monk, “you are overfull with your own opinions. I cannot show you the way of Zen.”
Compiled by Marc de Smedt. The Wisdom of Zen, New York: Abbeville Press, 1994.