An appropriate response

A monk asked Yunmen, "What are the teachings of a whole lifetime?" Yunmen said, "An appropriate response."

Blue Cliff Record, case 14

How to sit with it

No rulebook covers everything. What does this moment actually call for?

Read it once more, slowly. Then sit for two minutes and let it stay in the background. There is nothing to solve. New to this? Read what a koan is.