Ignorance-Knowledge: 102

These three levels—externalism (bahir-artha-vāda), mind-only (citta-mātra), and consciousness-only (vijñapti-mātratā)—form a continuous evolutionary trajectory in Buddhist epistemology, where the role of consciousness becomes increasingly central and refined. They are not mutually contradictory; rather, each transcends the previous one, moving gradually from external objects to inner realization, and finally from inner realization to an even more profound consciousness-revelation.

The first level, externalism, is equivalent to an epistemic realist position. Here it is assumed that there exists a clear dualistic relationship between knowledge and the object of knowledge: the "object" (artha) exists externally, and "knowledge" (jñāna) merely reflects it. According to this view, knowledge is dependent, while the object is independent. Cognition arising from objects manifests within consciousness—for instance, a tree exists independently outside our awareness, and seeing (darśana) is merely its reflection. Yogācāra criticizes this realist position because it reduces knowledge to a lifeless mirror, dismissing consciousness's inherent creativity and autonomy.

The second level, mind-only doctrine, breaks this realist dualism. Here it is said that what is taken to be an "object" is actually a cognition of consciousness itself. There is no external "object"; whatever can be known manifests within consciousness. In this theory, consciousness (citta) is not merely reflective but creative and self-luminous. However, Yogācāra does not accept "citta" as individual mental processes; it is a form of universal stream of cognition that contains all experience. Here the psychological aspect of Buddhist philosophy transcends into philosophical dimensions—mind is no longer personal but an infinite stream of awareness underlying cosmic experience.

The third level, consciousness-only (vijñapti-mātratā), transcends even mind-only doctrine to reach a more subtle insight. Here consciousness (vijñāna) is not merely "existing"; it is a dynamic reality that is continuously self-representational within itself. The term "consciousness-only" represents Yogācāra's own philosophical culmination, where consciousness no longer "knows something" but experiences itself. Consciousness divides itself into two parts—subject and object—and this performance of duality is experience or cognition (vijñapti). This flow of cognition is the world. That is, the world is not some static matter or entity; it is consciousness's inherent reflective stream—the process of consciousness's essential "becoming experience."

Here the distinction and movement of the three levels becomes clear. In externalism, consciousness and matter are mutually separate—consciousness is a knowing mirror, matter a distinct element. In mind-only doctrine, this separation dissolves—matter is consciousness's reflection, consciousness is the foundation of everything. But consciousness-only goes one step further to reveal consciousness's "experiential-nature"—consciousness doesn't just know, it knows itself, reflects itself, and that flow of self-reflection appears as the "world."

Philosophically explaining this evolution, it indicates a profound and meaningful philosophical journey flowing through various epistemological and metaphysical doctrines. Initially, externalism presents a dualistic perspective where a clear division exists between mind and matter, knower and known, consciousness and reality. In this stream, the material world exists independently of the human mind, and knowledge is acquired when mind interacts with these external objects. Here a fundamental difference exists between observer and observed object.

Then mind-only doctrine (idealism) transcends this dualism, advancing toward non-dual idealism or unitary mentalism. According to this doctrine, reality is fundamentally mental or consciousness-created. What appears external is actually a manifestation or creation of mind. Here the material world is no longer independent of mind but dependent on it. This perspective establishes mind as the primary reality and views all experience and knowledge as products of mental processes. Here the division between knower and known begins to diminish, as the known object is also considered ultimately part of mind.

Finally, consciousness-only or pure consciousness reveals a profound non-dual phenomenology. This is a state where knowledge, knowing, and the known object—these three activities become unified. At this level, no division or differentiation remains. The knowledge-acquirer, the process of knowledge, and the cognitive object—the boundaries between these completely dissolve.

This is not merely the non-duality of mind or matter, but the ultimate unity of existence where no duality remains. Here consciousness is no longer seen merely as an "instrument of knowing," but is considered the "nature of existence" or fundamental reality. Consciousness itself is existence, and existence itself is consciousness. This is such a state where subject and object become one, and the individual's existence merges with ultimate being, indicating the final stage of profound spiritual or philosophical realization. In this perspective, the entire universe and every experience is an inseparable part of consciousness, where ultimate truth manifests from every particle. Thus Yogācāra's "consciousness-only" is not merely psychology; it is an ontological declaration—consciousness itself is real, and the world is that consciousness's self-manifestation.

These three levels provide a progressive and deeper analysis of the nature of reality in Yogācāra philosophy, extending from the externality of objects to the formless experience of consciousness.

Consciousness-only means that "object" and "subject" are actually two aspects of one identical consciousness. Consciousness creates division within itself and perceives itself as "I" and "that." Thus when we say "I am seeing this tree," actually that seeing, being-seen, and tree—all are an internal arrangement of consciousness. Within this awareness, seer and seeing merge into one.

This very theory later creates bridges between Buddhist śūnyavāda (Nāgārjunian Madhyamaka) and Kashmir Śaivism's "consciousness-luminous appearance." The only difference is that in Yogācāra, consciousness-only sees the world as "formless awareness" where no personal soul exists, while in Kashmir Śaivism, that very awareness becomes "consciousness-bliss-power" manifesting in līlā—that is, there consciousness spontaneously manifests its forms in bliss.

Consciousness-only means that this world, thought, time, I, you—all are reflections of one awareness. Nothing exists independently without consciousness, and whatever exists is consciousness's intimate manifestation. Through this theory, Yogācāra Buddhist philosophy declares that liberation means not acquiring something new, but realizing this truth—everything is consciousness's play, the vibration of infinite self-contemplation.

Yogācāra's consciousness-only (vijñāna-mātratā), Nāgārjuna's śūnyavāda, and Kashmir Śaivism's consciousness-luminous appearance (caitanyamaya ābhāsa)—these three theories, though apparently non-dualistic, consciousness-centered, and liberation-oriented philosophies, have profoundly different approaches to ontology, epistemology, and soteriology. All three explain the nature of experience, but on the questions of what is "real" and what role "consciousness" plays, each creates its own distinctive voice.

Yogācāra or "consciousness-only doctrine" (vijñapti-mātratā-vāda) is the idealist branch of Buddhist philosophy, established by Asaṅga and Vasubandhu. Its central thesis is that whatever we know or see is merely consciousness's reflection; there is no independent reality outside consciousness. This term "consciousness-only" means exactly "only consciousness"—that is, seeing, hearing, thinking, feeling—all are internal representations of consciousness. Just as someone seeing fire in a dream feels heat, though there is actually no fire—similarly our worldly experience is also cognitive appearance manifesting within consciousness.

This consciousness or awareness in Yogācāra philosophy is called ālaya-vijñāna—that is, "storehouse consciousness," where past experiences and karmic results remain stored as seeds, and new cognitions arise from them. Consequently, the world and experience become a continuous internal manifestation of consciousness. Here "mind" is not personal but collective consciousness-stream. Therefore Yogācāra philosophy can be called Epistemic Idealism—where whatever can be known is constructed within consciousness, and liberation (mokṣa/nirvāṇa) means purification of awareness—when it is realized that there are no external objects, everything is one's own consciousness's reflection.

Nāgārjuna's Madhyamaka śūnyavāda somehow transcends even this "consciousness-only" perspective of Yogācāra. In the Mūlamadhyamakakārikā, Nāgārjuna states that all dharmas are śūnya (empty), meaning no object has its own independent nature (svabhāva). But here "emptiness (śūnyatā)" doesn't mean non-existence; rather "interdependence" (pratītya-samutpāda)—whatever exists depends on something else for its existence. This means no object or consciousness is self-sufficient within itself; both are mutually dependent.

Where Yogācāra says "consciousness is true, objects don't exist," Nāgārjuna conversely states—both consciousness and objects are without inherent nature (niḥsvabhāva), both are empty. That is, nothing can be called "ultimate truth." Consciousness, objects, mind, thought—all exist within the sphere of relative relationships; therefore truth means not some static existence but relational emptiness. This philosophy can be called Ontological Non-essentialism. According to Nāgārjuna, liberation (nirvāṇa) doesn't mean purification of consciousness but realizing that everything is dependent, relative, and apparent through the unreal. When this dualistic thinking—"I" and "world," "consciousness" and "objects"—all dissolve, then the wise one attains nirvāṇa.

Relational Emptiness—this concept is fundamentally the central theory of Nāgārjuna's Madhyamaka śūnyavāda, which states that no object, idea, or experience exists with an independent, self-sufficient, or unchanging "essence" (svabhāva) within itself; rather everything exists within relationships, through dependence, and due to mutual positioning. That is, nothing's existence is "because of itself," but rather "because it has relationships with other things" that its existence appears.