Bodhisattva Way Talks

In Buddhism, a bodhisattva is a person who has attained, or is striving towards, bodhi ('awakening', 'enlightenment') or Buddhahood. Often, the term specifically refers to a person who forgoes or delays personal nirvana or bodhi in order to compassionately help other individuals reach Buddhahood.

In the Early Buddhist schools, as well as modern Theravāda Buddhism, bodhisattva (or bodhisatta) refers to someone who has made a resolution to become a Buddha and has also received a confirmation or prediction from a living Buddha that this will come to pass. In Theravāda Buddhism, the bodhisattva is mainly seen as an exceptional and rare individual. Only a few select individuals are ultimately able to become bodhisattvas, such as Maitreya.

In Mahāyāna Buddhism, a bodhisattva refers to anyone who has generated bodhicitta, a spontaneous wish and compassionate mind to attain Buddhahood for the benefit of all sentient beings. Mahayana bodhisattvas are spiritually heroic persons that work to attain awakening and are driven by a great compassion (mahākaruṇā). These beings are exemplified by important spiritual qualities such as the "four divine abodes" (brahmavihāras) of loving-kindness (maitrī), compassion (karuṇā), empathetic joy (muditā) and equanimity (upekṣā), as well as the various bodhisattva "perfections" (pāramitās) which include prajñāpāramitā ("transcendent knowledge" or "perfection of wisdom") and skillful means (upāya).

Mahāyāna Buddhism generally understands the bodhisattva path as being open to everyone, and Mahāyāna Buddhists encourage all individuals to become bodhisattvas. Spiritually advanced bodhisattvas such as Avalokiteshvara, Maitreya, and Manjushri are also widely venerated across the Mahāyāna Buddhist world and are believed to possess great magical power, which they employ to help all living beings.

From Bodhisattva on Wikipedia