According to Chapter 8 of the Sai Satcharitra, what is the true purpose of human life, and how does it differ from animal existence?

Chapter 8 of the Sai Satcharitra presents a profound philosophy on human life, arguing that its true purpose is the attainment of the Supreme Self, or Paramatman. The text explicitly questions whether life is merely for being born, growing, and breathing. It points out that if life is only about activities like eating, sleeping, fear, and mating, then there is no real difference between a human and animals like dogs or pigs, which also fill their bellies and reproduce. As stated in the chapter, the greatness of the human body is wasted if it is used for the same ends as animals, making the pursuit of this higher spiritual goal the unique duty of a human.