Japanese Zen Buddhism

Chao-chou once asked a newly arrived monk, 'Have you ever been here before?' The monk answered, 'Yes, I have.' The Master said, 'Have a cup of tea.' Again he asked another monk the same question, and the monk replied, 'I have never been here before.' The Master again said, 'Have a cup of tea.' Later the head monk asked, 'Master, how is it that, when one monk has been here before, you say, "Have a cup of tea," and when another has not been here, you say, "Have a cup of tea" ?' The Master called out, 'O head monk!' The head monk replied, 'Yes, Master?' The Master said, 'Have a cup of tea.'

-Master Chao-chou Ts'ung-shen (778-897)