Shankaracharya’s Advaita Philosophy: The Architecture of Non-Dual Reality

Shankaracharya’s Advaita philosophy is the most influential system of non-dual metaphysics in Indian history, declaring that Brahman alone is real, the world is an appearance, and the individual self is none other than Brahman. Adi Shankara, an eighth-century philosopher from Kaladi, Kerala, composed commentaries on the Upanishads, the Bhagavad Gita, and the Brahma Sutras that would shape Hindu thought for over a millennium. In a short life of about thirty-two years, he established four monastic centers across India to preserve and propagate the teaching. His philosophy is not merely a philosophical position but a path to liberation: the direct recognition that the bondage you feel is the result of a single misperception, and that when that misperception is removed by knowledge, what remains is the recognition that you were never bound. In one line: Shankaracharya’s Advaita teaches that the Self you seek is what you already are—infinite, eternal, and one with the ground of all existence.

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Part 1: The Historical Context

A Time of Transition

Shankara lived during a period of significant political and cultural change. The Gupta dynasty had fallen, and the brief peace established by King Harsha in the seventh century had passed. It was a time that witnessed the decline of Buddhism and Jainism and a powerful resurgence of Hinduism—a resurgence to which Shankara made significant contributions.

The State of Vedanta Before Shankara

The Vedanta tradition is rooted in the Vedic quest for the ultimate reality that is the ground of all existence. In the Upanishads, this ultimate reality is called Brahman and is frequently said to be identical with the innermost self, the Atman. However, the various Upanishads did not speak with a single voice. While some taught that Brahman is the only true reality and is identical with Atman, others taught that Brahman and the world are both real, and that Atman is a part of Brahman.

The Brahma Sutra, attributed to Badarayana (first century BCE), became a foundational text for Vedanta because it summarized and unified the diverse and sometimes conflicting teachings of the Upanishads. During the approximately 700 years between Badarayana’s Vedanta tradition and Shankara’s reforms, Buddhism had come to play a powerful role in India’s spiritual and philosophical life.

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Part 2: The Core Philosophy of Advaita

Brahman Alone Is Real

The foundational declaration of Shankara’s Advaita is that Brahman alone is real. Brahman is the one underlying reality of the universe—infinite, eternal, unchanging, and beyond all attributes. It is described as Sat-Chit-Ananda—existence, consciousness, and bliss. In Shankara’s system, Brahman is described in two ways: Nirguna Brahman (without attributes) is the ultimate reality, beyond all qualities and forms; Saguna Brahman (with attributes) is the personal God, Ishvara, the object of devotion and meditation.

Shankara’s distinction between levels of reality allows him to retain a theism that involves serious religious intent. Ishvara is Brahman associated not with a limited mind and body like the jiva, but with maya, the universal creative matrix, the divine energy that projects the entire cosmos. Unlike the jiva, the Lord is not taken in by the delusive, concealing power of maya. The jiva is controlled by maya; Ishvara is the controller of maya.

The World Is an Appearance

The world of multiplicity that we perceive is not ultimately real. It is an appearance, a projection of Maya, the power of Brahman that causes the One to appear as many. Shankara distinguishes three levels of being or reality:

• Pratibhashika-satta (illusory reality): Objects produced by hallucinations and mirages
• Vyavaharika-satta (empirical reality): The everyday world of practical experience
• Paramarthika-satta (ultimate reality): Brahman alone

The world has empirical reality as long as one has not realized the ultimate truth. Within this empirical reality, external objects are quite as real as the cognitions we have of them. The world is not exactly illusory, for it is constantly present to the experience of all jivas. This ontologically indeterminate mode of being is characterized as sad-asad-anirvachaniya—”inexpressible as either real or unreal.”

Atman Is Brahman

The individual soul (Jiva) is not different from Brahman. Its apparent individuality is due to Avidya—ignorance of its true nature. The Mahavakyas (great sayings) declare this identity: Tat Tvam Asi (“That Thou Art”), Aham Brahmasmi (“I Am Brahman”), Ayam Atma Brahma (“This Self is Brahman”), Prajnanam Brahma (“Consciousness is Brahman”).

The Theory of Superimposition

Shankara’s method is rooted in the analysis of Adhyasa—superimposition. The Universal Self is not a non-object in the extreme sense, because it is an object denoted by the word ‘Asmat’ (I), and it is well-known that the Universal Self can be directly and intuitively perceived. There is no hard and fast rule that it is only on an object right before one’s eyes that another object should be superimposed. Ignorant people superimpose the attributes of concavity and dustiness on Space, which is not directly visible. Therefore to superimpose the non-self on the Universal Self is not inconsistent. Learned men consider superimposition of this nature as Nescience (Avidya) and say that knowledge (Vidya) is the determination of the real nature of a thing by discrimination.

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Part 3: The Prasthana Trayi – The Threefold Foundation

The Commentaries

Shankara wrote important commentaries on the Brahmasutra, the major Upanishads, the Bhagavad Gita, and other texts important to the Vedanta tradition. These three texts—the Upanishads, the Bhagavad Gita, and the Brahma Sutras—form the Prasthana Trayi, the three foundational texts of Vedanta philosophy.

The Brahma Sutra Bhasya

Shankara’s commentary on the Brahma Sutra is the earliest extant commentary on Badarayana’s text. It is celebrated for its lucidity and depth (prasanna-gambhira). There must have been commentaries before Shankara, but none of them has come down to us. Several commentators came after Shankara—Bhaskara, Yadavaprakasha, Ramanuja, Kesava, Nilakantha, Madhva, Baladeva, Vallabha, and Vijnana Bhiksu—and they differ from Shankara on certain moot points. But all of them have been influenced, knowingly or unknowingly, by Shankara’s commentary, which has served as the model.

The Gita Bhashya

Shankara’s commentary on the Bhagavad Gita is regarded as an outstanding specimen of Indian scholarship. It has aroused heated controversy among commentators, interpreters, and thinkers all the world over. After long-fought battles among them, there is a sort of consensus among scholars today that the text of the Bhagavad Gita that Shankara fixed—700 verses—is a unitary work.

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Part 4: The Path to Liberation

Knowledge Alone Liberates

For Shankara, Jnana (knowledge) is the direct and immediate means of liberation. Action and knowledge are contradictory and poles apart. Actions are prescribed for those who are still in ignorance and not for the enlightened. Shankara emphatically asserts that liberation can be attained by the Supreme knowledge accompanied with the renunciation of action.

The Role of Karma and Bhakti

Shankara allows a place for Karma and Bhakti while emphasizing the prime necessity of Jnana for the realization of the Self. While commenting on Bhagavad Gita 18.45, he takes Bhakti to be identical to Jnana by quoting 7.16-18 of the Gita, where Krishna says that a Jnani is one of His Bhaktas. In the Vivekachudamani, he goes on to say that Bhakti is one of the most conducive causes for liberation. Similarly, in the third verse of Atma Bodha, he says that karma is not opposed to ignorance, though it cannot destroy ignorance.

The Necessity of a Guru

Since the realization of the Self cannot be had from books or scriptures, Shankara insists on the necessity of instruction by a Self-realized Guru. The intense desire to liberate and the effort required by the sadhaka (aspirant) is emphasized. If there is no effort, there cannot be a result.

The Fourfold Qualification

The tradition lists four qualifications that prepare the seeker for Self-knowledge: Viveka (discrimination between the eternal and the non-eternal), Vairagya (detachment from the pleasures of this world and the next), Shatsampat (the six virtues: tranquility, self-control, cessation, forbearance, faith, concentration), and Mumukshutva (intense longing for liberation). When these four requisites are fulfilled, one is qualified to pursue self-knowledge through the study of Vedanta.

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Part 5: The Organizational Legacy

The Four Mathas

In a short life of thirty-two years, Shankaracharya not only revived Hinduism but also established four monastic centers across India to preserve and propagate the teaching:

• Jyotishpitha (Badrikashrama) in the north
• Sringeri Pitha in the south
• Govardhanapitha (Puri) in the east
• Sharadapitha (Dwaraka) in the west

He appointed four of his followers as the chief of these four mathas. The Sringeri Sharada Peetham confirms the four principal disciples—Sureshvaracharya, Padmapadacharya, Totakacharya, and Hastamalakacharya—and their association with the four mathas.

The Dasnami Order

The ten titles of the Dasnami order—Giri, Puri, Bharati, Vana, Aranya, Parvata, Sagara, Tirtha, Ashrama, and Sarasvati—indicate that the Sankara school of Sadhus cultivated complete renunciation. However, scholarly sources note that it would be more accurate to regard Shankara as the inspirer rather than the actual builder of the Dasnami orders. This organizational work is ascribed by learned Dasnamis to Sureshvaracharya, the third in pontifical succession to Shankaracharya at the Sringeri abbey.

The title Giri suggests the serenity and steadiness of a hill. Puri means one always in communion with Parabrahman. Bharati means one with learning. Vana and Aranya signify the stage of ascetics living always in forests, free from all attachments of this mundane life. Parvata means one, like Giri, living in mountain with steadfast knowledge. Sagara means one who possesses the depth of the ocean of truth. Tirtha is he who realises the Highest Self. Ashrama means one confirmed in the fourth stage of life and always standing above the pleasures of the worldly life. Sarasvati suggests one’s learning like Bharati and devotion to the knowledge of tunes.

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Part 6: The Legacy and Influence

The Endorsement of Science

The more one studies the teachings of Sankara and his source books—the Upanishads, the Brahma Sutra, and the Gita—the more one is struck by the intuitive anticipation by past seers of what are now coming to be regarded as scientific truths. The atomic theory and the existence of a reservoir of incalculable energy in the atoms, the doctrine of conservation of energy, and many of the developments of physics, chemistry, and biology regarding the potentialities of the infinitesimally small and the infinitely great are envisaged in the doctrines of Anu (atom), Anna, and Sabda Brahman—the Brahman as manifested severally as vibrations, sound, and energy and Sakti.

Some of the conclusions reached by astronomers and physicists that have culminated in the works of Einstein, Heisenberg, Niels Bohr, and the Curies seem like excerpts from Sankara’s exposition of the “Relativity of Knowledge” and the illusoriness of sensation.

The Influence on Indian Philosophy

His influence on Indian philosophy is so enormous that most of the later philosophies that evolved in India had either to agree with him or disagree with him, quoting him nevertheless.

As Sri Radhakrishnan wrote: “The Advaitism of Shankara is a system of great speculative daring and logical subtlety. Its austere intellectualism, its remorseless logic, which marches on indifferent to the hopes and beliefs of man, its relative freedom from theological obsessions, make it a great example of a purely philosophical scheme. It is impossible to read Shankara’s writings, packed as they are with serious and subtle thinking, without being conscious that one is in contact with a mind of a very fine penetration and profound spirituality. With his acute feeling of the immeasurable world, his stirring gaze into the abysmal mysteries of the spirit, his unswerving resolve to say neither more nor less than what could be proved, Shankara stands out as a heroic figure of the first rank in the somewhat motley crowd of the religious thinkers of medieval India. Shankara taught us to love Truth, respect reason and realize the purpose of life. Twelve centuries have passed, and yet his influence is visible.”

The Death of Shankara

The traditional accounts of Shankara’s death place it at Kedarnath in the Himalayas. However, competing traditions exist. The Keraliya Shankaravijaya places his death at Vadakkunnathan temple in Thrissur, Kerala. The Kanchi Kamakoti Peetham claims he attained videha mukti in Kanchipuram. The exact location remains a matter of tradition rather than established historical fact.

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Common Questions

Q1: Who was Shankaracharya?
Adi Shankaracharya was an eighth-century Indian philosopher and theologian who systematized the Advaita Vedanta school of non-dualistic philosophy. He was born in Kaladi, Kerala, and in a short life of about thirty-two years, he not only revived Hinduism but also established the organizational structure for its perpetuation through the mathas he inspired.

Q2: What is Advaita Vedanta?
Advaita Vedanta is the non-dualistic school of Indian philosophy that teaches there is only one reality—Brahman—and that the individual self (Atman) is none other than Brahman. The apparent multiplicity of the world is an appearance superimposed upon that one reality by ignorance.

Q3: What are Shankara’s major works?
Shankara wrote commentaries on the Brahma Sutras, the major Upanishads, and the Bhagavad Gita. He also composed numerous independent treatises (prakarana granthas) such as Vivekachudamani, Atma Bodha, and Upadesha Sahasri.

Q4: What is the role of a guru in Shankara’s philosophy?
Shankara insists on the necessity of instruction by a Self-realized Guru, since the realization of the Self cannot be had from books or scriptures. The intense desire to liberate and the effort required by the aspirant is emphasized.

Q5: What is the legacy of Shankaracharya?
Shankara’s influence on Indian philosophy is so enormous that most of the later philosophies that evolved in India had either to agree with him or disagree with him, quoting him nevertheless. His commentaries and treatises continue to be studied by seekers of truth across the world.

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Summary

Shankaracharya’s Advaita philosophy is one of the most rigorous and influential systems of non-dual metaphysics ever conceived. It declares that Brahman alone is real, the world is an appearance, and the individual self is none other than Brahman. Shankara systematized this teaching through his commentaries on the Upanishads, the Bhagavad Gita, and the Brahma Sutras, and he inspired the establishment of four monastic centers to preserve and propagate the tradition. His philosophy emphasizes the prime necessity of Jnana (knowledge) for liberation, while allowing a place for Karma and Bhakti as preparatory disciplines. His influence on Indian philosophy is so enormous that most later philosophies had either to agree with him or disagree with him, quoting him nevertheless. That realization—that the Self you seek is what you already are—is the gift of Shankaracharya’s Advaita philosophy.