Chinese Zen Master, Disciple of Pai-chang, Teacher of Lin-chi, Huang Po Ch'uan Hsin Fa Yao, a ninth-century Chinese Buddhist text
"Do not build up your views upon your senses and thoughts, do not base your understanding upon you senses and thoughts; but at the same time do not seek the Mind away from your senses and thoughts, do not try to grasp Realty by rejecting your senses and thoughts. When you are neither attached to, nor detached from, then, then you enjoy your perfect unobstructed freedom, then you have your seat of enlightenment."
"Your true nature is not lost in moments of delusion, nor is it gained at the moment of enlightenment. It was never born and can never die. It shines through the whole universe, filling emptiness, one with emptiness. It is without time or space, and has no passions, actions, ignorance, or knowledge. In it there are no things, no people, and no Buddhas; it contains not the smallest hairbreadth of anything that exists objectively; it depends on nothing and is attached to nothing. It is all-pervading, radiant beauty: absolute reality, self-existent and uncreated. How then can you doubt that the Buddha has no mouth to speak with and nothing to teach, or that the truth is learned without learning, for who is there to learn? It is a jewel beyond all price."
"All Buddhas and all ordinary beings are nothing but the one mind. This mind is beginningless and endless, unborn and indestructible. It has no color or shape, neither exists nor doesn't exist, isn't old or new, long or short, large or small, since it transcends all measures, limits, names and comparisons. It is what you see in front of you. Start to think about it and immediately you are mistaken. It is like the boundless void, which can't be fathomed or measured."
"On perceiving any individual's mind, you perceive all mind. Glimpse one truth, and all truth is present in your vision, for there is nowhere at all which is devoid of the Truth."
"A perception, sudden as blinking, that subject and object are one, will lead to a deeply mysterious understanding; and by this understanding you will awaken to the truth"
"When thoughts arise, then do all things arise. When thoughts vanish, then do all things vanish."
"Those who seek the truth by means of intellect and learning only get further and further away from it. Not ill your thoughts cease all their branching here and there, not till you abandon all thoughts of seeking for something, not till your mind is motionless as wood or stone will you be on the right road to the Gate."
"You must make strenuous efforts. Throughout this life, you can never be certain of living long enough to take another breath."
"People are scared to empty their minds fearing that they will be engulfed by the void. What they don’t realize is that their own mind is the void."
"Not till your thoughts cease all their branching here and there, not till you abandon all thoughts of seeking for something, not till your mind is motionless as wood or stone, will you be on the right road to the Gate."
"This pure mind, which is the source of all things, shines forever with the radiance of its own perfection. But most people are not aware of it, and think that mind is just the faculty that sees, hears, feels, and knows. Blinded by their own sight, hearing, feeling, and knowing, they don't perceive the radiance of the source. If they could eliminate all conceptual thinking, this source would appear, like the sun rising through the empty sky and illuminating the whole universe. Therefore, you students of the Tao who seek to understand through seeing, hearing, feeling, and knowing, when your perceptions are cut off, your way to mind will be cut off and you will find nowhere to enter. Just realize that although mind is manifested in these perceptions, it is neither part of them nor separate from them. You shouldn't try to analyze these perceptions, or think about them at all; but you shouldn't seek the one mind apart from them. Don't hold on to them or leave them behind or dwell in them or reject them. Above, below, and all around you, all things spontaneously exist, because there is nowhere outside the Buddha mind."
"Our original Buddha-Nature is, in highest truth, devoid of any trace of objectivity. It is void, omnipresent, silent, pure; it is glorious and mysterious peaceful joy-and that is all. Enter deeply in it by awakening to it yourself. That which is before you is it, in all its fullness, utterly complete. There is naught besides. Even if you go through all the stages of a Bodhisattva's progress toward Buddhahood, one by one, when at last, in a single flash, you attain to full realization, you will only be realizing the Buddha-Nature that has been with you all the time; and by all the foregoing stages you will have added to it nothing at all. You will come to look upon those aeons of work and achievement as no better than unreal actions performed in a dream. That is why the Tathagata [the Buddha] said: I truly attained nothing from complete, unexcelled Enlightenment."