The knowledge of the birth and death of the body can only be experienced by the soul if it is separate from the body. A lifeless matter cannot turn into or give birth to life or consciousness, nor can sentience turn itself into non-living. This that which cannot be created by matter and has always existed has to be eternal. The guru also infers that the anger etc. of the animals like snakes is derived from the previous birth which also proves the eternity of soul. The guru also poses the question—since substances only change form and are never destroyed then what happens to soul when it gets destroyed? It is the body that undergoes change like old age and death, not the underlying substance, that is, the soul which is not destroyed. Chapter III: The Self is the author of its actions The disciples doubt regarding self as the author of its actions (karma) and guru's explanation is discussed in verses 71 to 78. Disciple believes that actions itself may be influenced by past karmas or it may simply be the nature of the soul to attract karma. Alternatively, God may be influencing the actions and karma or the actions may be influenced by the nature. Guru notes that, by observation, it can be seen that lifeless matter cannot inspire action, only consciousness does. Since action needs inspiration from consciousness, karma is neither self-inspired nor the property of the soul, nor inspired by God. If karma were to be influenced by God, then god himself would be subject to impurity (of actions, good and bad). Thus it is the soul who is the doer of its actions. Chapter IV: The Soul is enjoyer and sufferer of its actions The verses 79 to 86 discuss the disciple's doubt on whether the soul itself is the enjoyer and sufferer of the consequences and the gurus clarification on the same. The disciple is convinced on the soul as the doer of its karma but doubts that soul bears the consequence of its actions as the karma is a lifeless and unintelligent entity and hence cannot influence consciousness. Disciple also notes other views that God dispenses karma and regulates the world. But since God does not influence the karma, it cannot bear fruit and hence soul does not bear its consequences. The guru notes that poison and nectar bear result even though both