Buddha accepted the basic Hindu doctrines of reincarnation and karma, as well as the notion that the ultimate goal of the religious life is to escape the cycle of death and rebirth. Buddha asserted that what keeps us bound to the death/rebirth process is desire, desire in the sense of wanting or craving anything in the world. Hence, the goal of getting off the Ferris wheel of reincarnation necessarily involves freeing oneself from desire. Nirvana is the Buddhist term for liberation. Nirvana literally means extinction, and it refers to the extinction of all craving, an extinction that allows one to become liberated.