What is the distinction between a human and an animal, and what is the ultimate purpose of human life as outlined in Chapter 14?

Chapter 14 draws a sharp distinction between human and animal life based on spiritual potential. It posits that a person who knows nothing beyond the basic instincts of food, sleep, fear, and procreation is essentially like an animal 'without a tail and horns.' The unique greatness of human birth, as detailed in Chapter 14, lies in the ability to pursue spiritual goals. The ultimate purpose of this life is to achieve devotion to God, through which 'the four types of liberation will fall at one's feet,' and the final 'realization of the Self is attained.' Without this spiritual pursuit, the chapter suggests a human birth is a wasted opportunity.