Beyond the biographical details about Sai Baba, what is the central philosophical message about human existence presented in Chapter 8?

The core philosophical message of Chapter 8 is a call to transcend a base, animalistic existence and realize the true purpose of human birth. The chapter argues that life is wasted if spent only on sleep, restlessness, and physical gratification. It posits that the unique quality of a human being is to be free, fearless, and independent, with the ultimate goal being the realization of the Eternal. According to Chapter 8, one must contemplate fundamental questions like "Where have we come from?" and "Who are we?" to be considered proficient, otherwise all efforts are just exhaustion.