I love these two especially:
Keichu, the great Zen teacher of the Meiji era, was the head of Tofuku, a cathedral in Kyoto. One day the governor of Kyoto called upon him for the first time.
His attendant presented the card of the governor, which read: Kitagaki, Governor of Kyoto.
“I have no business with such a fellow,” said Keichu to his attendant. “Tell him to get out of here.”
The attendant carried the card back with apologies. “That was my error,” said the governor, and with a pencil he scratched out the words Governor of Kyoto. “Ask your teacher again.”
“Oh, is that Kitagaki?” exclaimed the teacher when he saw the card. “I want to see that fellow.”
And my other favorite:
A Zen student came to Bankei and complained: “Master, I have an ungovernable temper. How can I cure it?”
“You have something very strange,” replied Bankei. “Let me see what you have.”
“Just now I cannot show it to you,” replied the other.
“When can you show it to me?” asked Bankei.
“It arises unexpectedly,” replied the student.
“Then,” concluded Bankei, “it must not be your own true nature. If it were, you could show it to me at any time. When you were born you did not have it, and your parents did not give it to you. Think that over.”