The Advaita in the Light of the Vedas: Twenty-Six

The weakness of logical foundation: To prove anything, we must rely on some external, neutral evidence. For instance, to establish the existence of an object, we observe it or examine its functionality. But when perception itself depends upon itself to prove its own distinctness and autonomy, that proof loses its logical foundation.

Critique from the Advaitic perspective: Advaita Vedanta refutes dualistic arguments through this fallacy of circular reasoning. Advaitins hold that if the world and knowledge are viewed as separate entities, and their distinction is considered a quality of perception, then the reasoning offered to prove this distinction ultimately becomes dependent upon itself. This renders the dualist conception of separate existence for world and knowledge a self-contradictory argument.

According to Advaita Vedanta, the ultimate reality Brahman is non-dual, and knowledge too is a manifestation of that same Brahman. There, the threefold division of knower, known, and knowledge has no ultimate reality. When emphasis is placed on difference and that difference is seen as an attribute of perception, then the knowledge of that difference becomes dependent upon its own proof. This dependence creates a weak foundation that obstructs the path to ultimate truth realization. The 'fallacy of circular reasoning' present in the dualists' explanation of perceptual knowledge and determinate knowledge clearly identifies the weakness in their argument. This constitutes an important aspect of Advaita Vedanta's critique of dualism.

Where does this type of reasoning originate? It actually derives from the established technique of Advaita Vedanta's polemical texts (such as Khandanakhandakhadya, Chitsukhi, Advaitasiddhi). These seek to demonstrate that no matter how many theories are advanced in support of dualism—creation processes, causation theory, "asat-karyanvada" and so forth—ultimately all reveal logical inconsistencies. Simply put, the matter under discussion here is this: if knowledge and world are held to be separate, then to establish difference, proof must be provided. But the proof being offered (perception) falls into the fallacy of circular reasoning when trying to establish its own existence and distinctness. Therefore dualism cannot stand.

This passage explains the source and fundamental purpose of Advaita Vedanta's critical method. The primary aim of Advaita Vedanta is to prove the oneness of Brahman and to show the world's multiplicity as the result of maya or ignorance. To accomplish this, Advaitic philosophers refute the arguments of other philosophies, particularly dualistic ones. Shriharsha's 'Khandanakhandakhadya', Chitsukha's 'Chitsukhi', and Madhusudana Sarasvati's 'Advaitasiddhi' are important texts in this tradition. Using rigorous logic and analysis, these works demonstrate that however much dualistic philosophies attempt to prove the reality of the world through creation theory, causation theory, or any other theory, their arguments ultimately suffer from self-contradiction or logical flaws.

The essential point is this: if someone claims knowledge (consciousness) and world as two separate entities, they must provide irrefutable proof supporting this distinction. But when they present perception as proof, this very perception falls into the fallacy of 'circular reasoning' when trying to prove its own existence and distinctness. That is, the proof becomes dependent upon itself, which is a logical error. For this reason, Advaitins conclude that dualism or the conception of the world's separate existence cannot logically survive. In their view, Brahman alone is real, and the world is an apparent entity superimposed upon Brahman, resulting from ignorance or avidya. When this ignorance is removed, Brahman-knowledge is attained and the world's multiplicity dissolves into apparent oneness.

We are conducting a deep analysis of the relationship between knowledge and its object—that is, between the knower (subject) and the known (object). The question arises: is there any fundamental difference between a pot and our knowledge of that pot? If we say this difference consists of a 'subject-portion', meaning knowledge is separate from its own object, then quite remarkable logical problems emerge.

First, if the senses create 'determinate knowledge' (specific knowledge) by coming into contact with an object (like a pot) and its qualities (such as the pot's shape, color, etc.), then this difference (pot and knowledge of pot being distinct) must exist beforehand. The reason is quite simple: if this difference does not exist before knowledge is formed, then the senses cannot connect with this difference. Consequently, no specific knowledge can be created. Knowledge can only illuminate its existing object, but if the difference between the object's existence and knowledge itself is indefinable, then how will knowledge identify its own boundaries? This is a question of presupposition: does knowledge contain its difference from its object within its own formative process, or does this difference exist independently before knowledge is created?

Presupposition (Sanskrit: pūrvābhyupagam, commonly known in Bengali as pūrvadhāraṇā or preconception) means accepting a particular notion, condition, or assumption before entering into any discussion. In Indian philosophical methodology, "presupposition" means arguing by bringing forward the view or principle that the opponent or debater has already accepted. Sometimes "presupposition" refers to such a pre-supposition that is accepted as a preliminary condition of discussion without proof. If someone assumes before beginning discussion that "the soul exists"—this is a presupposition. In Nyaya philosophical debates, when it's said as proof—"You yourself said earlier that the body is perishable"—that too is taken as presupposition. Presupposition sometimes becomes the basis of debate, sometimes creates limitations for argument.

Second, if we argue that this difference existed beforehand but was merely 'unknown'—this creates an even deeper serious problem. If knowledge was not what it was, yet existed before knowledge, once it is formed, how can it be apprehended by knowledge? This argument leads to logical inconsistency. It means knowledge itself cannot independently manifest its own differences, as was initially claimed. If the difference remains unknown, how will knowledge unveil it? This is rather like a light source trying to illuminate its own darkness. If knowledge cannot differentiate itself from its own object, then questions arise about its functionality or fundamental distinctiveness.

This discussion is fundamentally built around the nature of knowledge, the process of knowledge's origin, and the non-dual or dual relationship between knower and known. It indicates the depth of debate regarding 'Advaitism' and 'dualism' in Indian philosophy. In the workshop of Advaitic understanding, such fundamental questions sharpen our thinking further. Is knowledge merely a passive reflector, or does it actively construct its object and its own being? The answers to these questions compel us to reconstruct our fundamental notions about reality and truth perception.

Limitations of knowledge in revealing other knowledge: When we propose that "one knowledge reveals another knowledge," initially this may seem a logical solution. For example, present knowledge can illuminate or reveal past knowledge—what I am learning now helps me understand previously acquired knowledge anew. But this perspective has a serious weakness: it makes knowledge's self-revealing character (capacity to manifest itself) dependent upon time. This means knowledge can manifest itself only in the present, not in the past or future. This limitation weakens knowledge's fundamental, inherent self-manifestation's true nature. If knowledge depends only on the present, then its universality and timelessness become questionable, which contradicts the core conception of Advaita Vedanta.

The timeless nature of self-luminosity: Conversely, Advaita Vedanta's central thesis is that knowledge's self-manifestation is not bound by temporal limitations. Knowledge's self-luminosity (inherent capacity to make itself known) remains consistent across all temporal contexts. This applies to experiences of any time—past, present, or future. Knowledge of things apprehended in the past, knowledge of things to be apprehended in the future (such as premonition or planning of future events), and knowledge acquired in the present—all display the same fundamental self-manifestation. Knowledge's essential nature does not change with time; it is eternal and unchanging. For instance, once a pot is seen, in its conceptual existence it remains a pot forever; its fundamental 'potness' does not change with temporal passage. This is a core foundation of being's non-dual conception.

The inadequacy of mere existence: A common argument might be: "The difference between a pot and knowledge of a pot existed purely in being (though unknown). The senses connected with this difference, and from that connection knowledge was later created." This argument is actually merely a claim or statement, lacking any strong supporting evidence. If we simply say "existence was there" without presenting any direct or indirect proof in its favor, that existence must be considered unproven and false. This is a common dualistic argument, which Advaitins refute by showing that claims of unproven existence constitute a weak foundation. If knowledge is established merely on assumption, its truth remains uncertain.

Summary of dualism's problems: Advaita Vedanta examines the conception of duality (separate existence between knowledge and known object) and shows it is not logically sustainable. Its three main problems are as follows:

Prior difference: If it's claimed the difference between knowledge and known object existed beforehand, this is difficult to prove. Lacking proof, this claim is considered baseless. If difference is not self-evident, then its existence remains dependent merely on assumption.

Self-manifestation of difference: If it's said knowledge manifests its own difference (that is, knowledge itself illuminates itself and its difference), this leads to the 'fallacy of circular reasoning' or self-dependence error. That is, knowledge depends upon itself to prove its own existence and difference, which is circular reasoning.

Manifestation by other knowledge: If it's argued that some other knowledge manifests this difference (such as one knowledge proving another knowledge), this introduces 'time-dependence'. This conflicts with knowledge's timeless and self-existent nature. If knowledge depends on other knowledge for manifestation, its self-luminosity is impaired and this creates an infinite regress.