Sanskrit for 'self', 'soul' or 'that which is sentient'. It makes up the universe along with ajīva, or non-sentient material substance. It is a material substance that changes in size according to the body it inhabits in each life. It is born in different bodies in various places in the Jain universe based on karma from earlier lives. The soul is liberated from the cycle of birth when it has achieved spiritual purity and omniscience. Also called ātma or ātman.