Sattva (Sanskrit: सत्त्व, meaning goodness) is one of the three guṇas or "modes of existence" (tendencies, qualities, attributes), a philosophical and psychological concept understood by the Samkhya school of Hindu philosophy.
Sattva is the quality of goodness, purity, positivity, truth, serenity, balance, peacefulness, and virtuousness that is drawn towards Dharma and jñāna (knowledge).
In Samkhya philosophy, a guṇa is one of three "tendencies, qualities": sattva, rajas and tamas.
This category of qualities has been widely adopted by various schools of Hinduism for categorizing behavior and natural phenomena.
In liberation, the individual self transcends its material body and attains a pure form composed of shuddha sattva.