Buddha-nature

In Buddhist philosophy and soteriology, Buddha-nature (Chinese: fóxìng 佛性, Japanese: busshō 佛性, Vietnamese: Phật tính, Sanskrit: buddhatā, buddha-svabhāva or tathāgatagarbha तथागतगर्भ) is the innate potential for all sentient beings to become a Buddha or the fact that all sentient beings already have a pure Buddha-essence within themselves. "Buddha-nature" is the common English translation for several related Mahāyāna Buddhist terms, most notably tathāgatagarbha (तथागतगर्भ) and buddhadhātu, but also sugatagarbha, and buddhagarbha. Tathāgatagarbha can mean "the womb" or "embryo" (garbha) of the "thus-gone one" (tathāgata), and can also mean "containing a tathāgata". Buddhadhātu can mean "buddha-element", "buddha-realm", or "buddha-substrate".

Buddha-nature has a wide range of (sometimes conflicting) meanings in Indian Buddhism and later in East Asian and Tibetan Buddhist literature. Broadly speaking, it refers to the belief that the luminous mind, "the natural and true state of the mind", which is pure (visuddhi) mind undefiled by afflictions, is inherently present in every sentient being, and is eternal and unchanging. It will shine forth when it is cleansed of the defilements, that is, when the nature of mind is recognized for what it is.

The Mahāyāna Mahāparinirvāṇa Sūtra (2nd century CE), which was very influential in the Chinese reception of these teachings, linked the concept of tathāgatagārbha with the buddhadhātu. The term buddhadhātu originally referred to the relics of Gautama Buddha. In the Mahāyāna Mahāparinirvāṇa Sūtra, it came to be used in place of the concept of tathāgatagārbha, reshaping the worship of physical relics of the historical Buddha into worship of the inner Buddha as a principle of salvation.