Why Do We Forget Our True Nature? An Ancient Explanation of Human Ignorance

Summary: Ancient Indian philosophy does not treat ignorance as a lack of information. It treats it as a positive misperception—an active mistaking of the non-self for the self. Shankara’s Advaita Vedanta calls this avidya, and describes it as beginningless (anadi), not because it is eternal but because its origin cannot be traced . The Yoga Sutras define avidya as the field from which all other afflictions grow, manifesting as the mistaking of the impermanent for the permanent and the not-self for the self (YS 2.4–5). The Brihadaranyaka Upanishad’s answer is simpler and more devastating: the self is not forgotten because it is absent, but because it is so close that it is overlooked. We forget our true nature because we are looking for it somewhere else.

Key Points:

• Avidya is not a lack of information—it is an active misperception, the mistaking of the non-self for the self
• The Yoga Sutras name avidya as the field from which all other klesas grow (YS 2.4)
• Shankara describes avidya as beginningless (anadi)—not eternal, but without a traceable origin
• The Brihadaranyaka Upanishad: the self is not forgotten because it is distant, but because it is the very nature of the one who forgets
• The forgetting is functional—it allows the ego to function as a separate self, with its projects, fears, and desires
• The cure is not the acquisition of new knowledge but the removal of the misperception—neti neti, not this, not this

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Ignorance as Active Misperception

The English word “ignorance” suggests a blank—the absence of information, a gap waiting to be filled. The Sanskrit avidya means something more active. It is not the absence of knowledge. It is the presence of a misperception.

The Yoga Sutras define it with fourfold precision: avidya is mistaking the impermanent for the permanent, the impure for the pure, the painful for the pleasurable, and the not-self for the self (YS 2.5) . The fourth is the root of the other three. If you knew what you were, the other errors would not arise.

Shankara’s analysis is even more precise. Avidya is not a simple absence of knowledge, because the self is never actually unknown. The self is the awareness by which all knowing happens. It cannot be unknown, because it is what knows. The ignorance is not that the self is missing. It is that the self is misidentified.

Why the Self Is Overlooked

The Brihadaranyaka Upanishad offers the most unsettling explanation for why we forget our true nature. It is not because the self is distant or hidden. It is because the self is so close that it is overlooked.

The Upanishad describes the self as “the ear of the ear, the mind of the mind, the speech of speech” . Whatever you use to perceive the world is not the self—it is an instrument through which the self operates. The self is what remains when the instruments are set aside.

The problem is that the instruments are all you notice. You notice the body, the mind, the senses, the thoughts. The awareness in which they appear is not noticed because it is not an object among them. It is the noticing itself. You cannot see your own eye. You cannot hear your own ear. The self is not forgotten because it is absent. It is overlooked because it is the one doing the looking.

Avidya as Beginningless

Shankara describes avidya as anadi—beginningless. The term is precise. It does not mean that avidya is eternal. It means that its origin cannot be traced.

The distinction matters. If avidya had a beginning, something would have caused it. But what could cause ignorance of the self? The self cannot cause it, because the self is pure awareness. Something else would have to cause it. But there is nothing else—only the self and its apparent misperception.

Shankara’s conclusion is that avidya is beginningless but not endless. It can be removed. The removal is not the acquisition of new knowledge but the recognition of what was always the case. The rope was always a rope. The snake was the misperception. When the light is brought, the snake disappears, and the rope is seen to have been there all along.

The Function of Forgetting

If the self is so obvious, why is the forgetting so persistent? The tradition offers a functional explanation.

The forgetting allows the ego to function. If you knew, at every moment, that you were the whole, there would be no separate self to navigate the world, no projects to pursue, no fears to avoid, no relationships to negotiate. The ego is a construction, and the construction requires the forgetting. It is built on the assumption that the self is small, separate, and vulnerable.

The Gita’s analysis of the chain of suffering (2.62–63) presupposes this. The dwelling on objects, the attachment, the craving, the anger—all of it presupposes a self that needs something it does not have. If the self were known to be complete, the chain would have no fuel.

This does not mean the forgetting is a deliberate choice. It is not a decision you made. It is a condition that arose with the mind itself, beginningless in the sense that it cannot be traced to a first moment. But it is not permanent. It can be seen through.

The Method of Removal

The tradition does not prescribe the acquisition of new knowledge. It prescribes the removal of the misperception.

The method is neti neti—”not this, not this.” The practitioner examines each candidate for “what I am” and discovers that it is observed. The body is observed. The mind is observed. The thoughts are observed. The emotions are observed. The ego is observed. None of them is the observer.

What remains? The witness—the awareness in which all of these appear. The Vivekachudamani describes the Self as “the witness of all, the unchanging awareness.” The witness was never forgotten. It was only overlooked.

The removal is not an action. It is a recognition. The snake was never there. The rope was always there. The light does not create the rope. It reveals what was always the case.

What Remains

The question “Why do we forget our true nature?” has an answer that the tradition would not soften.

We forget because the self is not an object that can be found among other objects. We forget because the instruments of perception are noticed, and the awareness in which they appear is not. We forget because the forgetting serves a function—it allows the ego to function as a separate self with its projects and fears.

But the forgetting is not the final truth. The self was never absent. It was only overlooked. And when the overlooking is seen for what it is, what remains is what was always there—the awareness that was never forgotten, only misidentified.

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Medical Disclaimer: This article is for educational and philosophical purposes only and does not constitute medical or mental health advice. The concepts discussed are drawn from classical philosophical and religious texts and are not a substitute for professional psychological or psychiatric care. Contemplative practices, particularly self-inquiry, may not be appropriate for everyone and should be undertaken with appropriate guidance, especially if you have a history of trauma or dissociative experiences. If you are experiencing symptoms of depression, anxiety, or any other mental health condition, please consult a qualified healthcare provider.

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References:

_{Yoga Sutras | https://www.yoga-sutras.org/patanjali/2-5/
Yoga Sutras | https://www.yoga-sutras.org/patanjali/2-4/
Internet Archive | https://archive.org/stream/princialupanisad00radh/princialupanisad00radh_djvu.txt
Internet Archive | https://archive.org/download/SaundaryaLahari_201701/Dakshinamurti%20Subramania%20Vol%202_text.pdf
Internet Archive | https://archive.org/stream/in.ernet.dli.2015.51793/2015.51793.Sri-Sankaras-Teachings-In-His-Own-Words-1958_djvu.txt}