Zen is like a man hanging in a tree by his teeth over a precipice. His hands
grasp no branch, his feet rest on no limb, and under the tree another
person asks him: "Why did Bodhidharma come to China from India?" If
the man in the tree does not answer, he fails; and if he does answer, he
falls and loses his life. Now what shall he do?
Tortoise: That's clear; he should give up Zen, and take up molecular
biology.A M u Offering 245