Karma refers to the law of cause and effect in a person's life, reaping what one has sown. Buddhists believe that every person must go through a process of birth and rebirth until he reaches the state of nirvana in which he breaks this cycle. For a Buddhist, what one will be in the next life depends on one's actions in this present life. Buddha believed, unlike Hinduism, that a person can break the rebirth cycle no matter what class he is born into. The law of Samsara holds that everything is in a birth and rebirth cycle. Buddha taught that people do not have individual souls. The existence of an individual self or ego is an illusion. There is no eternal substance of a person which goes through the rebirth cycle. What is it then that goes through the cycle if not the individual soul? What goes through the rebirth cycle is only a set of feelings, impressions, present moments, and the karma that is passed on. Nirvana is an eternal state of being. It is the state in which the law of karma, and the rebirth cycle come to an end. It is the end of suffering, a state where there are no desires and the individual consciousness comes to an end. Although to our Western minds this may sound like annihilation, Buddhists would object to such a notion.