Truth
When we don't keep a clear and empty mind, we cannot reflect this world's truth. We normally just follow our thinking and let it drag us into some suffering realm. And because we are attached to the names and forms of things in this world, our minds get pulled hither and thither by the constant coming and going of things. When you don't become attached to name and form, then you already return to your true self. Our original nature is complete emptiness, infinite in time and space. Only habitual thinking and conceptual thought cloud its surface. By completely cutting off all thinking, your mind is like the clear mirror. As clouds come, the clouds and you become one. "Ah, the clouds are white." When spring comes and the grass grows, the spring and you become one. "The grass is green." When you see the mountain, the mountain and you become on. "Ohh, the mountain is blue." Your mind becomes one with the appearing and disappearing of everything. The name for that is truth. If you find truth, you have already attained the correct way.