Samkhya Philosophy Explained: Purusha, Prakriti and the 25 Tattvas

Quick answer: Samkhya is one of the six classical schools of Hindu philosophy and probably the oldest of them. It explains reality with two eternal principles: purusha, pure consciousness, and prakriti, primal matter made of the three gunas (sattva, rajas and tamas). From prakriti unfold the 23 other elements of mind and matter, making 25 tattvas in all. Suffering comes from confusing consciousness with the body and mind; liberation (kaivalya, "aloneness") comes through clear discernment (viveka) between the two. Its founder is traditionally the sage Kapila, and its classic text is the Samkhya Karika of Ishvarakrishna.

Samkhya ideas run through Hindu thought: the three gunas in the Bhagavad Gita, the field and its knower, the elements and senses in Ayurveda, and the whole framework of Patanjali's Yoga. This guide explains the system simply. For its place among the other schools, see Six Schools of Hindu Philosophy.

Samkhya at a Glance

Purusha and Prakriti

Purusha is pure consciousness, the witness. It does not act, change or suffer. Classical Samkhya holds that there are many purushas, one for each living being.

Prakriti is everything else: not only rocks and bodies, but also the mind, intellect and sense of "I". It is unconscious but active, and it is made of three strands, the gunas.

The Samkhya Karika uses a memorable image: purusha and prakriti come together like a lame man who can see and a blind man who can walk; together they can travel. Consciousness lights up prakriti's activity, and prakriti's activity serves purusha's experience and, finally, its liberation.

The Three Gunas

Before creation the gunas are in balance. When the balance is disturbed, prakriti unfolds into the world. Everything in nature, including our thoughts and moods, is a mixture of the three in different proportions. The Bhagavad Gita develops this teaching at length, especially in chapters 14, 17 and 18, and says that the gunas, not the Self, are what act (Gita 3.27).

The 25 Tattvas

Samkhya lists 25 principles (tattvas). Prakriti unfolds in a fixed order:

This list became the common vocabulary of Indian thought. Ayurveda, Yoga, many Puranas and the Tantras all build on it, sometimes adding further tattvas (Shaiva traditions count 36).

Cause and Effect: Satkaryavada

Samkhya holds that an effect already exists, hidden, in its material cause, as oil exists in sesame seeds or a pot in clay. Creation is therefore not something coming from nothing but a manifestation of what was latent. Vedanta schools inherited this debate and gave it their own twists.

Why We Suffer and How We Are Freed

Samkhya begins, like the Buddha and the Yoga Sutras, from the fact of suffering, which the Samkhya Karika divides into three kinds: from oneself (body and mind), from other beings and from natural or unseen forces.

Suffering arises because purusha seems to be bound up with prakriti. We take the activity of the intellect and mind for the Self: "I am angry", "I am old". Liberation is not created by ritual or by going somewhere. It is the clear knowledge that consciousness and nature are different. Then prakriti, its purpose served, withdraws.

The Karika's closing image compares prakriti to a dancer who stops dancing once the audience has seen her performance. What remains is kaivalya, consciousness standing in its own nature.

Samkhya and God

Classical Samkhya, as found in the Samkhya Karika, does not use a creator God to explain the world: prakriti unfolds by its own nature in the presence of purusha. For this reason it is often called non-theistic. That does not make it irreligious; it accepts the Vedas as a source of knowledge, and older forms of Samkhya, seen in the Mahabharata and some Upanishads, are theistic. The Yoga school, which shares Samkhya's metaphysics, adds Ishvara, a special purusha, as an object of devotion.

Samkhya in the Scriptures

• Upanishads: the Katha and Shvetashvatara Upanishads use Samkhya terms such as the order of mind, intellect and the unmanifest. See Katha Upanishad: Nachiketa and Yama.
• Mahabharata: the Moksha-dharma section of the Shanti Parva contains long Samkhya teachings.
• Bhagavad Gita: chapter 2 is titled Sankhya Yoga, where "sankhya" means the knowledge of the Self; chapter 13 on the field (kshetra) and its knower, and chapter 14 on the gunas, draw heavily on Samkhya ideas. See Bhagavad Gita Chapter 2: Sankhya Yoga.
• Srimad Bhagavatam: presents Kapila as an avatara of Vishnu who teaches a devotional Samkhya to his mother Devahuti in the third skandha. See Srimad Bhagavatam: The 12 Skandhas.

Key Texts

How Samkhya Differs from Vedanta

Shankara's Brahma Sutra Bhashya argues against Samkhya's view that unconscious prakriti could be the cause of an ordered world, which shows how seriously Vedanta took it. See Brahman, Atman and Maya Explained.

Why Samkhya Still Matters

• It gave Indian thought its map of mind and matter, used by Yoga and Ayurveda.
• Its idea of the witness behind the mind is a practical tool in meditation: watch thoughts arise as movements of prakriti, not as "me".
• The three gunas give a simple framework for food, habits and character that many Hindus use daily.

Frequently Asked Questions

Who founded Samkhya?

Tradition names the sage Kapila. The earliest surviving systematic text is the Samkhya Karika of Ishvarakrishna.

What are purusha and prakriti?

Purusha is pure consciousness, the silent witness. Prakriti is primal nature, which includes both matter and the mind.

What are the 25 tattvas?

Purusha, prakriti, intellect, ego, mind, the five sense organs, the five organs of action, the five subtle elements and the five gross elements.

Is Samkhya atheistic?

Classical Samkhya does not appeal to a creator God, so it is often called non-theistic. Earlier forms in the epics and the Bhagavatam's Kapila teaching are devotional, and the Yoga school adds Ishvara.

How is Samkhya related to Yoga?

They are paired schools. Yoga accepts Samkhya's account of purusha, prakriti and the gunas, and supplies the practical method, the eight limbs, to reach discernment.

What does "Sankhya Yoga" mean in the Gita?

In Gita chapter 2, "sankhya" refers to knowledge of the eternal Self as distinct from the body. It shares vocabulary with the classical school but is not identical to it.

Related Reading on HinduTone

• Six Schools of Hindu Philosophy (Shad Darshanas)
• Advaita vs Vishishtadvaita vs Dvaita
• What Is Atma? The Self in the Upanishads
• Beyond Asana: The 8 Limbs of Yoga from the Yoga Sutras
• Bhagavad Gita for Beginners: All 18 Chapters

Sources

1. Gerald James Larson, Classical Sāṃkhya: An Interpretation of Its History and Meaning, Motilal Banarsidass, 2nd ed., 1979.
2. Gerald James Larson and Ram Shankar Bhattacharya (eds.), Encyclopedia of Indian Philosophies, Vol. IV: Sāṃkhya, Princeton University Press, 1987.
3. M. Hiriyanna, Outlines of Indian Philosophy, George Allen & Unwin, 1932 (reprinted by Motilal Banarsidass).
4. Bhagavad Gita 2, 3.27, 13 and 14, text and translations at the Gita Supersite, IIT Kanpur: gitasupersite.iitk.ac.in

Last reviewed: 12 November 2026.