The philosophical foundations of Hinduism are based on the Vedas, direct personal experience through meditation, ethics for social order, and the belief that suffering stems from ignorance of the eternal self. Samkhya philosophy sees reality as having two aspects - Purusha, the pure self, and Praktiri, the material source. Advaita Vedanta claims there is only one reality of Atman/Brahman appearing separate due to Maya. Yoga uses spiritual disciplines like breathing, postures, and meditation to achieve self-knowledge or union with Brahman. The yoga described here differs from modern Western yoga by focusing more on spiritual goals rather than solely physical fitness.