Samkhya is one of the earliest schools of Indian philosophy and most systems, including yoga, have been drawn from or influenced by it. Samkhya is a dualistic philosophy and postulates two eternal realities: purusha, the witnessing consciousness, and prakriti, the root cause of creation, composed of the three gunas. This text highlights the unique contribution of samkhya philosophy in man's quest to understand his true nature. it discusses the practical theories of causation, manifestation, bondage and liberation.