Who among the following taught doctrine of ‘Shunyata’?

1. Fundamental Tenets of Buddhism (basic)

Welcome to your journey into Buddhist philosophy! To understand Buddhism, we must start with the fundamental realization of Siddhartha Gautama, the Buddha. He sought to address a universal human problem: why do we suffer? His teachings are built upon the Four Noble Truths (Aryasatyas), which function almost like a medical diagnosis. First, he identifies the illness (Dukkha: life involves suffering, such as birth, old age, and unfulfilled wishes). Second, he identifies the cause (Samudaya: the root of suffering is 'Tanha' or craving/thirst for pleasure and power). Third, he offers a prognosis (Nirodha: suffering can end through the cessation of craving). Finally, he provides the prescription: the Eightfold Path or the Middle Path, which avoids the extremes of both self-indulgence and harsh asceticism History , class XI (Tamilnadu state board 2024 ed.), Chapter 4, p.43.

As Buddhist thought evolved, particularly in the Mahayana tradition, these tenets grew into deeper philosophical inquiries. A central pillar of this evolution is the doctrine of Shunyata (Emptiness). Systematically expounded by the philosopher Nagarjuna, the founder of the Madhyamaka school, Shunyata suggests that all things are "empty" of a permanent, independent essence (svabhava). This doesn't mean things don't exist; rather, it means everything exists only in relation to other things — a concept known as Dependent Origination. For example, a tree is "empty" of a separate "tree-self" because it depends on soil, water, and sunlight to exist History , class XI (Tamilnadu state board 2024 ed.), Chapter 9, p.131.

Unlike other Indian philosophies that might seek an eternal soul (Atman) or an ultimate substance, Buddhism emphasizes Anicca (Impermanence) and Anatta (Non-self). By understanding that everything is in flux and lacks a fixed core, a practitioner can let go of the cravings that cause suffering. This peaceful coexistence with reality and the avoidance of harm to all living beings became the hallmark of the Buddhist way of life Exploring Society:India and Beyond. Social Science-Class VI . NCERT(Revised ed 2025), India's Cultural Roots, p.123.

Sources: History , class XI (Tamilnadu state board 2024 ed.), Chapter 4: Rise of Territorial Kingdoms and New Religious Sects, p.43; History , class XI (Tamilnadu state board 2024 ed.), Chapter 9: Cultural Development in South India, p.131; Exploring Society:India and Beyond. Social Science-Class VI . NCERT(Revised ed 2025), India's Cultural Roots, p.123

2. The Great Schism: Hinayana vs. Mahayana (intermediate)

Welcome back! In our last step, we looked at the early foundations of Buddhism. Now, we arrive at a massive turning point: the Great Schism. As Buddhism spread across diverse cultures, it naturally evolved. By the 1st century CE, a major divide formalised during the Fourth Buddhist Council, held in Kashmir under the patronage of the Kushana King Kanishka History, class XI (Tamilnadu state board 2024 ed.), Polity and Society in Post-Mauryan Period, p.80. It was here that the tradition split into two primary paths: Hinayana (the 'Lesser Vehicle') and Mahayana (the 'Great Vehicle') THEMES IN INDIAN HISTORY PART I, History CLASS XII (NCERT 2025 ed.), Thinkers, Beliefs and Buildings, p.103.

The core of this split was a shift in how the Buddha was perceived. In the older Hinayana (often associated with the Theravada tradition), the Buddha was a human teacher who showed the way to Nirvana through individual effort. However, Mahayana introduced the idea of the Buddha as a divine figure to be worshipped. This new path also popularised the concept of Bodhisattvas—deeply compassionate beings who delay their own enlightenment to help all of humanity. While Hinayana texts remained in Pali, Mahayana scholars increasingly adopted Sanskrit History, class XI (Tamilnadu state board 2024 ed.), Rise of Territorial Kingdoms and New Religious Sects, p.43.

Feature	Hinayana (Lesser Vehicle)	Mahayana (Great Vehicle)
Nature of Buddha	A historical teacher/guide.	A deity/god-like figure.
Goal	Individual salvation (Arhat).	Salvation of all beings (Bodhisattva).
Worship	Symbolic (Footprints, Stupas).	Image/Idol worship.
Language	Pali (language of the masses).	Sanskrit (scholarly language).

Philosophically, Mahayana reached its height with Nagarjuna, the founder of the Madhyamaka (Middle Way) school. He propounded the doctrine of Shunyata (Emptiness). Nagarjuna argued that all phenomena are 'empty' of an independent, permanent essence because everything exists only in relation to something else (Dependent Origination). This profound insight became the intellectual bedrock of Mahayana Buddhism, influencing its spread to China and Japan, while Hinayana remained dominant in Sri Lanka and Southeast Asia History, class XI (Tamilnadu state board 2024 ed.), Rise of Territorial Kingdoms and New Religious Sects, p.42.

Sources: History, class XI (Tamilnadu state board 2024 ed.), Polity and Society in Post-Mauryan Period, p.80; THEMES IN INDIAN HISTORY PART I, History CLASS XII (NCERT 2025 ed.), Thinkers, Beliefs and Buildings, p.103; History, class XI (Tamilnadu state board 2024 ed.), Rise of Territorial Kingdoms and New Religious Sects, p.43; History, class XI (Tamilnadu state board 2024 ed.), Rise of Territorial Kingdoms and New Religious Sects, p.42

3. Schools of Ancient Indian Philosophy (Astika vs. Nastika) (intermediate)

To understand the vast landscape of ancient Indian thought, we must first look at the fundamental divide between the Astika and Nastika schools. In the context of Indian philosophy (Darshana), these terms do not mean 'theist' and 'atheist' in the Western sense. Instead, the distinction is based entirely on the authority of the Vedas. An Astika school (Orthodox) accepts the Vedas as an infallible source of knowledge, while a Nastika school (Heterodox) rejects their supreme authority. This classification is crucial for UPSC because it helps us place traditions like Buddhism and Jainism in their proper historical and intellectual context against the Vedic backdrop History, class XI (Tamilnadu state board 2024 ed.), Chapter 9, p.131.
The Astika tradition is comprised of the Shad-darshanas (Six Systems): Nyaya, Vaisheshika, Samkhya, Yoga, Mimamsa, and Vedanta. While these schools differ wildly—some are dualistic, some non-dualistic, and some even originally atheistic—they all maintain a formal allegiance to Vedic wisdom. Conversely, the Nastika schools, often referred to as Sramanic traditions, emerged as a challenge to the ritualism and social hierarchy of the Vedic period. These include Buddhism, Jainism, and Charvaka (the materialist school). These heterodox sects emphasized personal experience, logic, and ethical conduct over sacrificial rituals, profoundly influencing later Indian thought, including the Bhakti movement History, class XI (Tamilnadu state board 2024 ed.), Cultural Syncretism: Bhakti Movement in India, p.190.
Interestingly, these schools did not exist in isolation. They engaged in centuries of rigorous debate, often borrowing concepts from one another. For instance, the Buddhist concept of renunciation and the prohibition of animal sacrifice eventually influenced the orthodox Saivite and Vaishnavite traditions History, class XI (Tamilnadu state board 2024 ed.), Cultural Syncretism: Bhakti Movement in India, p.192. Even high-level philosophical doctrines like Shunyata (Emptiness), expounded by the Buddhist philosopher Nagarjuna, pushed orthodox thinkers like Adi Shankara to refine their own theories of reality and illusion (Maya) to counter the Buddhist challenge.

Feature	Astika (Orthodox)	Nastika (Heterodox)
Core Belief	Acceptance of Vedic authority.	Rejection of Vedic authority.
Major Schools	Nyaya, Vaisheshika, Samkhya, Yoga, Mimamsa, Vedanta.	Buddhism, Jainism, Charvaka, Ajivika.
Focus	Metaphysics, ritual duty (Dharma), and the soul (Atman).	Ethics, logic, renunciation, and often the denial of a permanent soul (Anatta).

Sources: History, class XI (Tamilnadu state board 2024 ed.), Chapter 9: Cultural Development in South India, p.131; History, class XI (Tamilnadu state board 2024 ed.), Cultural Syncretism: Bhakti Movement in India, p.190-192

4. Advaita Vedanta and Adi Shankaracharya (exam-level)

Concept: Advaita Vedanta and Adi Shankaracharya

5. Bhakti Philosophers and Vedantic Interpretations (exam-level)

To understand the development of Indian philosophy, we must look at how the **Bhakti movement** evolved from simple devotional poetry into sophisticated theological systems. While early saints like the **Azhwars** (Vaishnavite) and **Nayanmars** (Saivite) expressed their love for the divine through Tamil hymns History, class XI (Tamilnadu state board 2024 ed.), Cultural Development in South India, p.117, later scholars sought to provide these emotions with a solid intellectual foundation. This led to various interpretations of the **Vedanta** (the end of the Vedas), specifically focusing on the relationship between the individual soul (Atman) and the Supreme Reality (Brahman). Adi Shankara pioneered the school of **Advaita** (Absolute Monism), arguing that only Brahman is real and the perceived world is *Maya* (illusion). However, as the Bhakti movement reached its peak, scholars like **Ramanuja** felt that Shankara’s 'attributeless' God was too abstract for a devotee. Ramanuja expounded **Vishistadvaita** (Qualified Monism), suggesting that while the soul and God are one, the soul retains its individual identity, much like a cell is part of a body History, class XI (Tamilnadu state board 2024 ed.), Cultural Syncretism: Bhakti Movement in India, p.192. This made Vaishnavism more inclusive and accessible to the masses History, class XI (Tamilnadu state board 2024 ed.), Cultural Development in South India, p.133. Later, other thinkers provided alternative paths. **Madhavacharya** proposed **Dvaita** (Dualism), asserting that God and the soul are eternally separate entities History, class XI (Tamilnadu state board 2024 ed.), Cultural Syncretism: Bhakti Movement in India, p.196. Meanwhile, **Vallabhacharya** founded the **Pushtimarga** (the Way of Grace), which emphasized that salvation is achieved not through human effort, but through the extreme grace of Lord Krishna History, class XI (Tamilnadu state board 2024 ed.), Cultural Syncretism: Bhakti Movement in India, p.195.

Philosopher	School of Thought	Core Concept
Adi Shankara	Advaita	Non-dualism; the Soul and Brahman are identical.
Ramanuja	Vishistadvaita	Qualified Non-dualism; God has attributes (Saguna).
Madhavacharya	Dvaita	Dualism; God and the Soul are distinct.
Vallabhacharya	Shuddhadvaita	Pure Non-dualism; Path of Grace (Pushtimarga).

Sources: History, class XI (Tamilnadu state board 2024 ed.), Cultural Development in South India, p.117; History, class XI (Tamilnadu state board 2024 ed.), Cultural Syncretism: Bhakti Movement in India, p.192; History, class XI (Tamilnadu state board 2024 ed.), Cultural Syncretism: Bhakti Movement in India, p.195; History, class XI (Tamilnadu state board 2024 ed.), Cultural Syncretism: Bhakti Movement in India, p.196; History, class XI (Tamilnadu state board 2024 ed.), Cultural Development in South India, p.133

6. Nagarjuna and the Madhyamaka School (exam-level)

To understand the heart of Mahayana philosophy, we must look at Nagarjuna (c. 150–250 CE), often regarded as the most influential Buddhist thinker after the Buddha himself. He founded the Madhyamaka (Middle Way) school, which provided the philosophical scaffolding for Mahayana Buddhism as it spread across Asia History, class XI (Tamilnadu state board 2024 ed.), Rise of Territorial Kingdoms and New Religious Sects, p.42. Nagarjuna’s brilliance lay in his ability to use rigorous logic to deconstruct our misunderstandings of reality, moving the discourse beyond simple ritual into profound metaphysics. At the core of his teaching is the doctrine of Shunyata (Emptiness). In the Madhyamaka view, to say a thing is "empty" does not mean it doesn't exist or that the world is a void (nihilism). Rather, it means that all phenomena are empty of Svabhava — meaning they lack a fixed, permanent, or independent essence. Why? Because of the principle of Pratityasamutpada (Dependent Origination). Since everything arises only in dependence upon causes and conditions, nothing can exist "on its own." For example, a flower is "empty" of a separate self because it is actually a collection of non-flower elements like sunlight, rain, and soil. This school is called the "Middle Way" because it steers a path between two philosophical extremes: Eternalism (the belief that things have a permanent, unchanging soul or essence) and Nihilism (the belief that nothing matters or exists at all). By showing that things exist conventionally but are empty ultimately, Nagarjuna created a system that allowed for the vibrant debates seen in the kutagarashalas of ancient India THEMES IN INDIAN HISTORY PART I, History CLASS XII (NCERT 2025 ed.), Thinkers, Beliefs and Buildings, p.85. His legacy lived on through later scholars like Arya Deva and influenced the great centers of learning like Nalanda History, class XI (Tamilnadu state board 2024 ed.), The Guptas, p.99.

The Extreme	The Concept	Madhyamaka Critique
Eternalism	Things have a permanent, independent soul (Atman).	Rejected: Everything changes and depends on causes.
Nihilism	Nothing exists; actions have no consequences.	Rejected: Things exist conventionally and function within cause and effect.

Sources: History, class XI (Tamilnadu state board 2024 ed.), Rise of Territorial Kingdoms and New Religious Sects, p.42; THEMES IN INDIAN HISTORY PART I, History CLASS XII (NCERT 2025 ed.), Thinkers, Beliefs and Buildings, p.85; History, class XI (Tamilnadu state board 2024 ed.), The Guptas, p.99

7. The Doctrine of Shunyata (Emptiness) (exam-level)

At the heart of Mahayana Buddhism lies the profound and often misunderstood Doctrine of Shunyata, or 'Emptiness.' To understand this, we must first look at its architect, Nagarjuna, a 2nd-century philosopher who founded the Madhyamaka (Middle Way) school. While early Buddhist philosophy, preserved in texts like the Abhidhamma Pitaka History, class XI (Tamilnadu state board 2024 ed.), Rise of Territorial Kingdoms and New Religious Sects, p.42, focused on breaking down the world into basic building blocks (dharmas), Nagarjuna took this further. He argued that even these building blocks are 'empty.'

What does 'Empty' mean? In this context, 'Emptiness' does not mean 'nothingness' or nihilism. Rather, it means that all phenomena are empty of 'Svabhava' (inherent existence or self-nature). Nagarjuna logic follows the principle of Pratityasamutpada (Dependent Origination): because everything arises only in dependence on causes and conditions, nothing can exist independently on its own. Imagine a chariot: if you remove the wheels, the axle, and the seat, the 'chariot' disappears. The chariot is 'empty' of a permanent, independent 'chariot-soul.' It exists, but only as a collection of parts and relations.

This doctrine represents a major shift in the 'trunk' of Indian philosophical thought Exploring Society: India and Beyond. Social Science-Class VI . NCERT(Revised ed 2025), India's Cultural Roots, p.120. By realizing that things lack a fixed essence, a practitioner can let go of attachment and ego, which are the root causes of suffering. This philosophical depth provided the intellectual foundation for the later evolution of Mahayana practices, including the veneration of Bodhisattas—compassionate beings who understand this emptiness but choose to remain in the world to help others THEMES IN INDIAN HISTORY PART I, History CLASS XII (NCERT 2025 ed.), Thinkers, Beliefs and Buildings, p.103.

Concept	Description
Svabhava	The false idea that things have an independent, permanent essence.
Shunyata	The reality that all things are empty of such independent essence.
Madhyamaka	The 'Middle Way' between believing things are eternal and believing nothing exists at all.

Sources: History , class XI (Tamilnadu state board 2024 ed.), Rise of Territorial Kingdoms and New Religious Sects, p.42; Exploring Society: India and Beyond. Social Science-Class VI . NCERT(Revised ed 2025), India's Cultural Roots, p.120; THEMES IN INDIAN HISTORY PART I, History CLASS XII (NCERT 2025 ed.), Thinkers, Beliefs and Buildings, p.103

8. Solving the Original PYQ (exam-level)

Now that you have explored the evolution of Mahayana Buddhism and the concept of dependent origination, this question brings those building blocks together. The doctrine of Shunyata (emptiness) is not about 'nothingness' in a nihilistic sense, but rather the philosophical realization that all phenomena lack an inherent, independent essence because they are inter-dependently co-arisen. By connecting your knowledge of Buddhist metaphysics to its key proponents, you can identify (A) Nagarjuna as the architect of the Madhyamaka school, which systematically expounded this doctrine as the middle path between existence and non-existence.

To arrive at the correct answer, reason through the specific school of thought associated with each figure. While several of these names are giants of Indian philosophy, Nagarjuna is the only one tied to the Buddhist logical tradition of 'emptiness.' As a coach, I suggest you visualize a timeline: Nagarjuna lived around the 2nd century CE, during the formative period of Mahayana logic, making him the definitive source for this doctrine. This is confirmed in History, class XI (Tamilnadu state board 2024 ed.), which highlights his role in the cultural and philosophical development of the era.

UPSC often uses 'category traps' to test your precision. Shankaracharya (Option B) is a common distractor because his concept of Maya (illusion) sounds similar to emptiness, but he belongs to Advaita Vedanta, which posits a permanent Brahman. Vallabhacharya (Option D) is a trap from the later Bhakti movement, focusing on devotional paths rather than abstract logic. Finally, Harisena (Option C) represents a historical distractor; he was a court poet known for the Allahabad Pillar Inscription, not a philosopher. Recognizing these distinct categories—Vedanta, Bhakti, and Secular Literature—allows you to eliminate incorrect choices with confidence.