By His Divine Grace Srila A.C.B. Swami Prabhupada
The first thing is that bhagavan uvaca. These things required for purification. Sattva-samsuddhih. The human life is meant for sattva. Sattva. Sattva means existence. We are existing. I am existing; you are existing. But we are sometimes appear to be not existing. That is called death. We, every living entity, we are eternal. That is stated in the Second Chapter, that ajo nityah sasvatah, na hanyate hanyamane sarire [Bg. 2.20]. These things required to understand, that "I am a living being, not only I am, everyone. We are eternal, nityah sasvatah." There are so many universities all over the world and so-called scientists and philosophers, but they do not know that we are eternal. Just see their knowledge, advancement of knowledge. Eternal, aja. There is no birth. Na hanyate hanyamane sarire [Bg. 2.20]. After this destruction of this body, I am not finished. I still exist. What is the destruction of this body? Death means it is a machine. It is called machine. Yantrarudhani mayaya. It is a machine given to me.