The mind is ordinarily chock-full with all kinds of intellectual nonsense and passional rubbish. They are of course useful in their own ways in our daily life. There is no denying that. But it is chiefly because of these accumulations that we are made miserable and groan under the feeling of bondage. Each time we want to make a movement, they fetter us, they choke us, and cast a heavy veil over our spiritual horizon. We feel as if we are constantly living under restraint. We long for naturalness and freedom, yet we do not seem to attain them. The Zen masters know this, for they have gone through with the same experiences once. They want to have us get rid of all these wearisome burdens which we really do not have to carry in order to live a life of truth and enlightenment. Thus they utter a few words and demonstrate with action that, when rightly comprehended, will deliver us from the oppression and tyranny of these intellectual accumulations. But the comprehension does not come to us so easily. Being so long accustomed to the oppression, the mental inertia becomes hard to remove. In fact it has gone down deep into the roots of our own being, and the whole structure of personality is to be overturned. The process of reconstruction is stained with tears and blood. But the height the great masters have climbed cannot otherwise be reached; the truth of Zen can never be attained unless it is attacked with the full force of personality. The passage is strewn with thistles and brambles, and the climb is slippery in the extreme. It is no pastime but the most serious task in life, no idlers will ever dare attempt it. It is indeed a moral anvil on which your character is hammered and hammered. To the question, “What is Zen?” a master gave this answer, “Boiling oil over a blazing fire.”[1.14] This scorching experience we have to go through with before Zen smiles on us and says, “Here is your home.”