The Six Realms

Buddhist cosmology describes six realms of rebirth into which beings are born according to their karma, pictured together on the bhavacakra, the wheel of existence: the realms of the gods, deva, the jealous demigods, asura, humans, manusya, animals, tiryagyoni, hungry ghosts, preta, and the hell realms, naraka. Each realm is a temporary destination rather than a final state; even the god realms, marked by long life and pleasure, end when the karma that produced the birth is exhausted, and beings are reborn again according to whatever karma remains.

The human realm is given particular doctrinal weight across Buddhist traditions as the most favorable for spiritual practice, since it combines enough suffering to motivate the search for liberation with enough stability and awareness to pursue it, a balance the god realms, too pleasant, and the lower realms, too painful or too confused, are said to lack. The Theravada tradition typically presents five realms, folding the asuras into the deva or preta categories, while the Mahayana and Vajrayana traditions more consistently enumerate six, a difference in classification rather than in the underlying doctrine of karmically determined rebirth.

Unlike a fixed heaven or hell in the Abrahamic sense, none of the six realms is a permanent destiny; the entire structure exists within samsara, the cycle of rebirth that Buddhist practice aims to escape rather than to be well placed within. Traditional readings treat the realms as literal destinations determined by the moral and mental quality of past actions, while a widespread strand of Buddhist teaching, more prominent in some modern and psychologically oriented presentations, reads the six realms as descriptions of mental and emotional states available within a single human life, the paranoid hunger of the preta realm or the competitive envy of the asura realm as ways a mind can be right now rather than only places a mind can be reborn. Both readings coexist within the tradition without one having displaced the other.

The Six Realms sit alongside a separate cosmological scheme, the Thirty-One Planes of Existence found in the Theravada Abhidhamma literature, which maps a far more granular set of god realms and states onto the same six broad destinations; the two schemes describe compatible cosmologies at different levels of resolution rather than competing accounts. Tibetan Buddhist iconography renders all six realms together inside the wheel held by Yama, lord of death, a single image meant to be contemplated as a map of where an unliberated mind can still go.