A thirsty monk who went to the owner of a restaurant and asked her: "If I can inspire you with a Buddhist Teaching, will you give me a glass of water?", to which the pious Buddhist restaurateur eagerly said: "Yes".

With confidence that he (the monk) would earn his lunch, the monk solemnly quoted the Heart Sutta: "Form is emptiness. Emptiness is form".

"Wonderful! Marvelous! How profound!" exalted the woman. "Please monk, wait here a moment".

The thirsty monks' throat was already gulping as the woman brought an big glass from the kitchen covered with a lid. "Sit down, Venerable Sir. Here's your glass of water said the woman.

Then she placed the heavy glass before the expectant monk, removed the lid and reveal an empty form. "If form is emptiness and emptiness is form", said the woman, "Then, Venerable Sir, Drink emptiness!".

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