According to Chapter 14, what is the purpose of human birth and how does it differ from an animal's existence?

Chapter 14 explains that human birth is exceptionally fortunate and its primary purpose is to achieve devotion to God and the realization of the Self. The text draws a stark contrast with animal life, stating that a person who knows nothing beyond food, sleep, fear, and procreation is 'merely like an animal without a tail and horns.' The greatness of human birth lies in its unique potential for spiritual attainment, through which the four types of liberation can fall at one's feet. As mentioned in this chapter, failing to make life meaningful through spirituality renders one's birth a 'useless burden on the earth,' highlighting the profound responsibility that comes with this precious opportunity.