What a lovely little discussion.
A monk asked Zen master Rinzai:
"What is the essence of Buddhism?"
The master let out a shout.
The monk bowed.
The master said: "This one can hold his own in debate."
Another monk asked:
"What is the essence of Buddhism?"
The master raised his fly-whisk.
The monk let out a shout.
The master also let out a shout.
The monk hesitated.
The master hit him.
At the High Seat, a monk asked:
"What is the essence of Buddhism?"
The master raised his fly-whisk again.
The monk let out a shout.
The master hit him.
A monk asked: "What about the edge of the sword?"
The master cried out: "Dangerous, dangerous!"
The monk hesitated.
The master hit him.
Another monk asked:
"Master, from whom is the song you sing? Where does your style come from?"
The master said:
"When I was with my teacher, I questioned him three times, and three times was beaten."
The monk hesitated.
The master gave a shout, then hit him and said:
"One cannot drive a nail into empty space."
The master then said:
"Monks, some do not shirk losing body and life for the Dharma. As for me, I spent twenty years with my late teacher. Three times I asked him on the essence of Buddhism, and three times he kindly beat me. It was as if he had caressed me with a branch of fragrant sage. Now I feel like tasting a sound beating again; who can give it to me?"
A monk stepped forward and said,
"I can."
The master took up his stick and handed it to him.
The monk hesitated to take hold of it.
The master hit him.
The master said:
Today's students of the absolute truth need to look for genuine insight. If you have genuine insight, birth and death will not affect you, and you will be free to come and to go. Nor do you need to look for worthiness; it will arise of itself.
Followers of the way, the old masters had ways of making men. Do not let yourselves be deluded by anyone; this is all I teach. If you want to make use of genuine insight, then use it RIGHT NOW without delay or doubt.
But students nowadays do not succeed because they suffer from lack of self-reliance. Because of this lack, you run busily hither and thither, are driven around by circumstance and kept whirling by the ten thousand things.
You cannot find deliverance thus. But if you can stop your heart from its ceaseless running after phantom desires of the will, you will not be different from the Buddha and founders of the sacred teachings.
Do you want to know the Buddha? None other than he who here in your presence is now reading this Dharma teaching. Just because you lack self-reliance, you turn to the outside and run about seeking.
Even if you find something there, it is only words and letters and never the living spirit of the founders of the teachings. Do not be deceived. Venerable Zen students, if you do not meet your own Buddha Nature at this very moment, you will circulate in the three worlds for ten thousand eons and a thousand births. And, by pursuing agreeable worldly situations, you will be reborn in the wombs of asses and cows.
Followers of the Way, as I see it, YOU are not different from the Buddha!
Today in your manifold activities, what is it that you lack? The flow of the six senses never ceases. Who can see it like that is, for all his life, a man who has nothing further to seek.
Venerable Ones, there is no place of rest in the three worlds; it is like a house on fire. This is not a place for you to stay long. The murderous demon of impermanence strikes in a single instant, without choosing between high and low, old and young.
Do you wish to be no different from the Buddhas and founders of the teachings? Then just do not look for ANYTHING outside.