Unit II. Ancient Systems of Indian Philosophy and Yoga System

Course

Course-XI (1.4.11) (Optional) — Yoga Education

Ancient Systems of Indian Philosophy

Indian philosophy, known traditionally as Darshana (meaning "vision" or "way of seeing"), is a vast collection of ancient traditions focused on understanding the ultimate truth of existence, human suffering, and the path to spiritual liberation.

These ancient systems are traditionally classified into two broad categories based entirely on their relationship with the Vedas, the oldest sacred texts of India.

1. Astika (Orthodox) Schools: These systems accept the Vedas as the supreme, reliable source of knowledge. There are six major Astika schools, often referred to as the Shad-Darshana. They include Nyaya (logic), Vaisheshika (atomic theory), Sankhya (dualistic reality), Yoga (spiritual discipline), Mimamsa (rituals), and Vedanta (the ultimate reality of the self).
2. Nastika (Heterodox) Schools: These systems completely reject the supreme authority of the Vedas. Instead, they rely on independent logic, personal experience, and the teachings of their own founders. The three most prominent Nastika schools are Buddhism, Jainism, and Charvaka (a purely materialistic philosophy).

Example

A teacher explaining this classification could compare the Vedas to a school's official constitution. The Astika philosophers are like students who accept the constitution as the ultimate rulebook for resolving any dispute. The Nastika philosophers are like students who reject that constitution entirely, preferring to create a completely different system of rules based on their own logic and direct experiences.

Why this matters for a teacher: Understanding this classification helps teachers demonstrate to students that Indian intellectual history is not a single rigid dogma, but a diverse, rich tradition of critical thinking and open debate.

Yoga and Sankhya Philosophy: Their Relationship

Within the six orthodox (Astika) schools, Sankhya and Yoga are intimately paired. They are often described by scholars as twin philosophies because one provides the theory while the other provides the practical application.

Sankhya, attributed to the sage Kapila, provides the theoretical map of reality. It is a dualistic philosophy, meaning it divides the entire universe into two fundamental, distinct realities: Purusha (pure, unchanging consciousness or the soul) and Prakriti (physical matter, nature, and the changing mind). According to Sankhya, human suffering happens because pure consciousness gets confused and overly entangled with physical matter. To achieve liberation, a person must realize that they are pure consciousness, totally separate from the physical world.

Yoga, systematized by the sage Patanjali, provides the practical methodology to achieve this realization. While Sankhya explains why we suffer, Yoga provides the exact physical and mental steps (like postures, breath control, and deep meditation) to actually un-entangle the mind from matter.

While they share the exact same view of the universe, they have one major philosophical difference. Classical Sankhya is generally non-theistic; it does not rely on a creator God to explain the universe. Yoga, however, introduces the concept of Ishvara (a personal, supreme God). In Yoga, God is not necessarily a creator, but a perfect focal point to help the practitioner concentrate during meditation.

Example

Think of a science class. Sankhya is the theoretical physics textbook that explains the laws of aerodynamics on a chalkboard. Yoga is the practical flight simulator session where the student physically practices flying an airplane based on those exact laws. One is the knowledge; the other is the disciplined action.

Why this matters for a teacher: Recognizing this relationship allows educators to explain that physical yoga is not just a random sequence of stretching exercises, but a practical laboratory for experiencing a highly sophisticated theory of the human mind and body.

Key Terms

• Darshana — The Sanskrit term for philosophy, literally meaning a "vision" or perspective on the truth.
• Astika (Orthodox) — Philosophical systems that accept the ultimate authority of the ancient Vedic texts.
• Nastika (Heterodox) — Philosophical systems (like Buddhism and Jainism) that reject the authority of the Vedas.
• Purusha — The Sankhya concept of pure, unchanging consciousness or the true self.
• Prakriti — The Sankhya concept of physical matter, nature, and everything that constantly changes.

Quick Recap

• Ancient Indian philosophy is divided into Astika (accepting Vedic authority) and Nastika (rejecting Vedic authority) schools.
• There are six classical Astika schools, including Sankhya, Yoga, Nyaya, and Vedanta; and major Nastika schools like Buddhism and Jainism.
• Sankhya and Yoga are closely related partner systems. Sankhya provides the theoretical understanding of the universe, dividing it into consciousness (Purusha) and matter (Prakriti).
• Yoga provides the practical, step-by-step physical and mental discipline required to achieve the liberation described by Sankhya.
• The primary difference is that Yoga accepts the concept of a supreme God (Ishvara) to aid meditation, whereas traditional Sankhya focuses strictly on the mechanics of nature and consciousness.

Further Reading

• An Introduction to Indian Philosophy — Satischandra Chatterjee and Dhirendramohan Datta
• Samkhya Karika — Ishvarakrishna (Translated by Swami Virupakshananda)
• The Yoga Sutras of Patanjali — Sri Swami Satchidananda