Introduction: The Empty Field
The writings of Hongzhi Zhengjue (1091–1157) belong to one of the most refined periods in the history of Chinese Chan Buddhism. A master of the Caodong lineage during the Song dynasty, Hongzhi became known for the contemplative approach later called silent illumination (mozhao, 默照). His teachings describe a mind that is quiet without becoming dull and attentive without pursuing every thought that appears.
Selections from these writings are available in English through Cultivating the Empty Field: The Silent Illumination of Zen Master Hongzhi, translated by Taigen Daniel Leighton and Yi Wu. The title draws upon one of Hongzhi’s characteristic images. The mind is compared to a field obscured by habits, attachments, judgments, and accumulated conditioning. Practice does not create the field. It clears the ground so that its openness can be experienced.
Hongzhi’s language is unmistakably Buddhist. He writes of emptiness, illumination, Buddha-nature, the Dharma, and liberation from attachment. Yet his practice instructions also describe familiar features of human psychology. People become entangled in thought. We interpret present experience through past experience, rehearse grievances, anticipate threats, defend identities, pursue desires, and continually construct explanations of what is happening.
Hongzhi’s response is remarkably simple: sit quietly and observe what remains when this activity is no longer constantly encouraged.
Silent illumination therefore deserves attention not only as an important development in Zen, but as one of humanity’s distinctive experiments in contemplative psychology. It asks whether the mind can become clearer not by thinking more, but by learning when thought is unnecessary.
Hongzhi and the Caodong School
Hongzhi lived more than a century before Eihei Dōgen, the Japanese monk whose lineage became the Sōtō school of Zen. Hongzhi should therefore not simply be described as the founder of shikantaza, the Japanese practice commonly translated as “just sitting.” The historical relationship is more complicated.
The Caodong tradition already possessed a distinctive approach to meditation before Dōgen traveled to China. Hongzhi became its greatest Song-dynasty literary representative. His writings developed a language of stillness, illumination, openness, and natural responsiveness that would later find close parallels in Sōtō Zen. Dōgen encountered this broader tradition through his Chinese teacher Tiantong Rujing, who later taught at Tiantong Monastery, where Hongzhi had served as abbot.
Hongzhi was thoroughly a Chan Buddhist of his own time. He lived within the monastic system, taught monks, participated in Chan lineage culture, and inherited centuries of Buddhist philosophy and meditation. Silent illumination was not an isolated technique invented independently of this tradition. It developed from the older practices of Buddhist dhyāna, Mahāyāna teachings concerning emptiness and Buddha-nature, Chinese Chan, and the particular inheritance of the Caodong school.
What Hongzhi accomplished was to give this approach an unusually clear and beautiful expression. He often explains meditation through images rather than elaborate technical schemes. Awareness resembles a clear mirror. Moonlight appears on still water. Clouds pass through an open sky. An empty field stretches beyond the boundaries imposed upon it. These images describe landscapes, but they also describe the mind.
Silent Illumination
The expression silent illumination contains the basic method.
“Silent” does not mean that thoughts must disappear. The mind naturally produces memories, impressions, sensations, emotions, and ideas. Trying to suppress this activity can simply create another form of mental agitation. Hongzhi instead emphasizes settling, allowing the accumulated disturbances of the mind to quiet naturally.
“Illumination” prevents this quiet from becoming blankness. The practitioner remains awake and attentive. Sounds are heard. Bodily sensations remain present. Thoughts can be noticed as they arise. The surrounding world has not disappeared.
The practice therefore depends upon the union of stillness and awareness. This also distinguishes silent illumination from meditation organized around a single object. In breath meditation, attention repeatedly returns to breathing. A mantra practice returns to a phrase or sound. Visualization uses a deliberately constructed image. Other Buddhist methods closely examine bodily sensations, mental states, impermanence, compassion, or death.
Hongzhi eventually removes the special object. One sits within the whole field of experience. Breathing occurs. Sounds occur. Thoughts occur. Nothing needs to be selected as the exclusive center of consciousness. The practitioner learns instead to remain aware without being continually pulled into whatever appears. The method looks simple because there is so little to do. Its difficulty becomes apparent when one notices how rarely the ordinary mind is content to leave experience alone.
The Habitual Mind
Human beings do not normally experience the world as neutral observers. Every perception arrives within an existing history. A remark reminds us of another remark. A facial expression is interpreted through earlier relationships. A political event enters an established network of assumptions and loyalties. A physical sensation can produce anxiety because it resembles something experienced years before.
This ability to learn from the past is essential. Without memory and prediction, human beings could scarcely function. The same capacity can become restrictive. The mind develops habits of interpretation and then begins to mistake those habits for reality itself.
Buddhist traditions described this process through concepts such as karma, attachment, ignorance, and mental formations. Modern psychology describes related processes through conditioning, cognitive schemas, automatic thoughts, learned responses, and predictive models. These vocabularies emerged from different intellectual traditions and should not be treated as equivalents. They nevertheless address an important feature of human cognition: previous experience shapes present perception before conscious reflection has begun.
Hongzhi repeatedly instructs the practitioner to relinquish these accumulated entanglements. He is not asking for amnesia or the destruction of personality. Practice creates an opportunity to recognize a thought as something occurring in the mind instead of automatically accepting it as a complete description of reality.
A person sitting in meditation may suddenly remember an argument. The argument is not occurring now. What exists now is the memory of it, accompanied perhaps by anger, embarrassment, justification, or regret. Usually we enter the argument again. Hongzhi asks us to notice what the mind is doing.
The Empty Field
The metaphor of the empty field brings Hongzhi’s contemplative psychology together with the larger Buddhist philosophy of emptiness. Emptiness in Buddhism does not mean that nothing exists. It means that things do not exist as completely independent and permanent entities possessing an unchanging essence of their own.
A tree exists through soil, sunlight, water, climate, genetic inheritance, and innumerable ecological relationships. Remove these conditions and the tree cannot remain what it is. Human beings are no different.
The person who sits in meditation has a body produced through biological inheritance, nutrition, environment, and development. Language came from other people. Beliefs emerged through culture and education. Personality developed through temperament and experience. Memory preserves parts of the past while continually reconstructing them in the present.
There is certainly a person sitting on the cushion. Buddhism does not require us to pretend otherwise. What becomes questionable is the assumption that somewhere beneath these changing conditions there must exist a permanent and independent self untouched by them. This is the meaning of the Buddhist teaching of non-self (anātman).
Hongzhi approaches this teaching experientially. During meditation, sensations appear and disappear. Thoughts appear and disappear. Emotions appear and disappear. Even the thought “I am meditating” is another event that comes and goes. The empty field is therefore not empty because nothing happens there. It is empty because nothing remains fixed.
The Mirror Mind
Another important Chan image is the mirror.
A mirror receives what stands before it without retaining the previous image. When the object moves away, the reflection disappears and the mirror remains available for whatever appears next. Human consciousness often behaves differently.
We meet a person while carrying an older version of them in memory. We encounter a new argument while defending a conclusion reached years earlier. We anticipate failure and interpret ambiguous evidence as proof that failure has already begun. Past experience enters the present before we recognize that it has done so.
Silent illumination develops the capacity to notice what is actually present before accumulated interpretation completely takes over. This does not mean abandoning judgment. Human beings must distinguish danger from safety, truth from falsehood, and harmful actions from beneficial ones. Hongzhi’s mirror is not a model of intellectual passivity. The point is to see more clearly before deciding.
Thoughts Without Obedience
Modern psychology provides useful language for this aspect of contemplative practice. A person ordinarily experiences thoughts primarily through their content. If the mind says, “This will fail,” attention moves toward the possibility of failure. If it says, “He insulted me,” anger begins organizing the situation around insult. If it says, “I am inadequate,” a passing thought can become a judgment about the self.
Several modern psychological approaches teach people to develop some distance from this process. Metacognitive awareness involves recognizing thinking as thinking. Decentering allows thoughts and emotions to be observed without complete identification. Acceptance and Commitment Therapy uses the term cognitive defusion for learning to experience thoughts without automatically treating them as facts or commands.
Hongzhi was not practicing psychotherapy, and silent illumination should not be reduced to a modern therapeutic technique. His purpose was Buddhist awakening. The comparison is useful because both recognize a distinction that is easily overlooked in ordinary life. Having a thought does not require obeying it. Meditation allows that distinction to become something experienced rather than merely understood.
From Buddhist Meditation to Modern Mindfulness
The contemporary mindfulness movement has brought related contemplative practices into hospitals, schools, universities, workplaces, psychotherapy, and popular culture. Although mindfulness has deep roots in Buddhist traditions, its modern secular forms developed through a complicated meeting of Asian Buddhist meditation, Western psychology, medicine, and scientific research.
One of the most influential developments was Mindfulness-Based Stress Reduction (MBSR), established by Jon Kabat-Zinn at the University of Massachusetts Medical Center in 1979. MBSR adapted elements of Buddhist meditation for use in a secular clinical setting. Mindfulness was commonly described as deliberately attending to present experience with an attitude of nonjudgmental awareness.
Related methods subsequently entered psychotherapy. Mindfulness-Based Cognitive Therapy (MBCT) combined mindfulness practice with elements of cognitive therapy. Dialectical Behavior Therapy (DBT) incorporated mindfulness among a broader set of skills for emotional regulation. Acceptance and Commitment Therapy (ACT) developed methods for acceptance, present-moment awareness, and changing one’s relationship with thoughts.
These systems are not simply secular versions of Zen. Their purposes, methods, theoretical assumptions, and institutional settings differ. Clinical mindfulness is normally concerned with identifiable psychological outcomes. Hongzhi’s silent illumination belongs to a Buddhist path concerned ultimately with awakening and liberation.
Yet the modern mindfulness movement has helped establish something important: attention and awareness can be systematically trained, and the relationship people have with their own thoughts can change. In this respect, contemporary psychology has entered territory that Buddhist contemplative traditions have explored for centuries.
Mindfulness and Silent Illumination
Mindfulness and silent illumination overlap, but they are not the same practice. Many introductory mindfulness exercises begin with a specific object such as breathing, bodily sensation, sound, or movement. Attention wanders, the wandering is noticed, and awareness returns to the object. This provides a practical method for developing attentional stability.
Some mindfulness practices later broaden into open monitoring or open awareness, in which the practitioner notices thoughts, sensations, emotions, and perceptions without selecting one as the permanent focus. At this point the resemblance to silent illumination becomes considerably stronger. Hongzhi nevertheless goes further.
Silent illumination is not primarily designed to make the practitioner better at attending to present experience. It emerges from a Buddhist understanding in which the distinction between the observing self and the observed world is itself subject to examination.
Modern mindfulness often retains an implicit structure in which I am observing my experience. Hongzhi eventually questions the solidity of the “I” standing behind the observation. This is one reason silent illumination cannot be fully translated into the language of mindfulness. The practices share important psychological territory, but Hongzhi’s purpose reaches into the Buddhist investigation of emptiness and non-self.
Just Sitting
The later Sōtō expression shikantaza is commonly translated as “just sitting.” The apparent simplicity of the phrase is easily misunderstood. “Just” does not mean careless. Zen sitting requires posture, attention, stability, and continuing practice. What is absent is the demand that meditation produce a particular experience.
This differs from many ordinary human activities because most activities are organized around achievement. We work toward an outcome, study in order to understand something, and exercise to improve the body. The same mentality easily enters meditation.
A practitioner may begin sitting in order to become calm. Later the objective becomes concentration, insight, enlightenment, or spiritual accomplishment. Meditation then reproduces the structure governing much of ordinary life: the present condition is insufficient, and practice becomes the means by which a preferred future condition will eventually be obtained.
Hongzhi’s teaching unsettles this assumption. Practice matters deeply, but the practitioner is not trying to manufacture the fundamental condition Hongzhi describes. The open field is already present beneath the activity obscuring it.
This idea became especially important in Dōgen’s later teaching of practice-realization. Zazen was not simply preparation for awakening. Proper sitting was itself an expression of awakened practice.
Human beings spend an extraordinary portion of life somewhere other than where they are. The mind anticipates what comes next, reconstructs what came before, evaluates what is happening, and imagines what ought to be happening instead. Just sitting interrupts the habit.
What Makes Silent Illumination Radical
The distinctive quality of silent illumination becomes clearer when it is placed beside other contemplative practices. Concentration meditation gives the mind an object and develops the ability to remain with it. Mantra practice organizes attention around repeated sound or language. Visualization deliberately constructs an image.
Devotional contemplation directs the mind toward a sacred figure or relationship. Koan practice takes up a saying, encounter, or question that cannot be resolved through ordinary conceptual reasoning. Modern mindfulness usually trains awareness in order to develop identifiable psychological capacities. Silent illumination gradually removes these supports.
There is no mantra to repeat and no image to maintain. There is no problem that must be solved during the sitting. There is eventually no privileged object to which attention must continually return. More importantly, there is no particular state that the practitioner is required to manufacture.
This makes silent illumination unusual even among meditation practices. Most techniques contain an implicit transaction: perform the method correctly and some desired condition should follow. Concentration should deepen. Stress should diminish. Insight should arise. A prayer should establish communion. A visualization should become stable.
Hongzhi repeatedly undermines this structure. The practitioner sits without turning the present moment into a means of acquiring something else. This does not mean that practice has no effects. Hongzhi clearly believed that long practice transforms the practitioner. The radical element lies in refusing to make those effects the object of sitting.
The contradiction is only apparent. A person can cultivate without constantly measuring cultivation. One can become more attentive without pursuing an experience called “attention.” One can change without continually constructing an improved self.
This is where silent illumination differs most sharply from the modern culture of self-optimization. Contemporary life offers an expanding collection of methods for becoming healthier, calmer, more productive, more focused, more attractive, more successful, or more efficient. Meditation itself can easily be absorbed into this economy of improvement.
Hongzhi offers something different. For the period of sitting, the project of self-improvement is put down. The practitioner does not abandon learning, ethics, responsibility, or growth. One simply stops treating the present person as a defective object requiring continuous repair. The empty field does not need to become another field. It needs to be cultivated clearly enough to be seen.
Purpose and Effect
Hongzhi’s purpose was liberation within the Mahāyāna Buddhist path. He was not developing a relaxation technique or an early form of psychotherapy. His writings concern the exhaustion of attachment, realization of emptiness, loosening of self-centered perception, and the development of an increasingly natural responsiveness to circumstances.
Modern psychology can examine some aspects of this process without claiming to explain the entire Buddhist path. Regular contemplative practice can develop the ability to notice mental events before reacting to them. Awareness can make repetitive patterns of thought more visible. Emotional states can be experienced without immediately becoming actions. The practitioner becomes increasingly familiar with the changing character of thoughts, sensations, and moods.
Hongzhi is interested in what happens when this familiarity becomes deeply established. The person eventually rises from the cushion and returns to ordinary life. Silent illumination is therefore not completed by becoming peaceful while sitting. The stillness cultivated in meditation is carried into activity. Hongzhi’s mirror receives whatever appears before it. The practitioner attempts to do the same while remaining fully capable of responding.
A Humanist Reading of Hongzhi
Integrated Humanism approaches religious and philosophical traditions as part of the accumulated intellectual and contemplative inheritance of humanity. Their claims should neither be accepted merely because they are ancient nor rejected merely because they developed within religious cultures.
Hongzhi provides a particularly useful example. His language belongs to medieval Chinese Buddhism. His teachings assume Mahāyāna concepts that a modern secular practitioner may accept, reinterpret, question, or leave unresolved.
The practice itself remains open to investigation. Human beings clearly possess habitual patterns of thought. Attention can be trained. Emotions can be observed. Self-referential thinking can become excessive. Perception is shaped by prior experience. Greater awareness of these processes can influence behavior.
None of these observations requires a supernatural explanation. At the same time, reducing silent illumination to a therapeutic technique would remove much of what makes Hongzhi interesting. He is asking a larger question about human consciousness.
What remains when the mind stops continually organizing experience around the demands of the self? That is a psychological question, but it is also philosophical and contemplative.
Lucid Presence
For Integrated Humanism, lucid presence is a useful contemporary description of one capacity cultivated through silent illumination. The term is not intended to replace Hongzhi’s mozhao. It identifies a feature of the practice that can be understood without first accepting Buddhist doctrine.
Lucid presence is the ability to remain clearly aware of experience without becoming unnecessarily absorbed in the mind’s commentary upon it. Thought remains useful. Analysis remains necessary. Memory and identity continue to perform essential functions. The purpose is not to weaken reason but to recognize when thought is clarifying experience and when it is merely repeating itself. This places contemplative practice within a larger humanist discipline.
Science investigates the natural world and tests empirical claims. Critical thinking examines arguments and evidence. Psychology studies cognition and behavior. Ethics considers how human beings ought to live together. Contemplative practice adds disciplined observation of experience from the first-person perspective.
These methods perform different tasks. The value of contemplation lies partly in providing access to something that cannot be learned entirely through description. A person can understand intellectually that thoughts are temporary mental events and still spend an afternoon trapped inside one of them. Sitting makes the distinction experiential.
Cultivating the Human Field
Every human mind is cultivated long before it begins consciously cultivating itself. Biology, family, language, education, culture, relationships, social conditions, historical circumstances, and chance experiences all contribute to the person who eventually sits down on the cushion. Some of these influences produce useful knowledge and durable wisdom. Others leave behind prejudice, fear, resentment, superstition, or habits that no longer serve their original purpose.
Hongzhi’s empty field provides a place in which these patterns can become visible. Meditation does not tell us which scientific theories are correct or which political institutions are just. It cannot replace education, evidence, ethical reasoning, or public debate. It can reveal something about the mind that conducts all of them.
This may be why silent illumination remains relevant after nearly nine centuries. The social environment surrounding the human mind has changed enormously since Song-dynasty China, but many of the processes Hongzhi observed remain familiar.
The mind wanders. It remembers. It anticipates. It grasps. It defends its interpretations and continually reconstructs the person at the center of them. Hongzhi did not propose that we wage war against this activity. He taught people to sit quietly enough to see it.
The modern mindfulness movement has rediscovered part of this territory and translated it into the languages of psychology, medicine, and mental health. Hongzhi reminds us that the contemplative inquiry can extend further.
Awareness is not only a means of managing stress or regulating emotion. It can become an investigation into how experience is constructed and how firmly the self at its center actually needs to be held. This is what makes silent illumination radical. The empty field is not somewhere else. It is the life already occurring before we finish explaining it.
AUTHOR
D. B. Smith is the founder and director of Science Abbey, a writer, historian, and humanist with a longstanding interest in Buddhist philosophy, contemplative practice, and the scientific study of consciousness. A lay practitioner of Sōtō Zen, he has studied and practiced meditation in the Korean Seon and Japanese Zen traditions. His writing explores the intersections of science, philosophy, religion, psychology, and Integrated Humanism, with particular attention to human flourishing and the cultivation of wisdom.
