What is the path to liberation outlined in Chapter 19, and what is the role of detachment?

As detailed in Chapter 19, the ultimate duty and fulfillment of human birth is to attain eternity, fearlessness, liberation, independence, and the Supreme Self. The path to this goal is clearly defined: there can be no liberation without knowledge, and knowledge cannot be attained without detachment. The chapter explains that the spark of detachment arises only when the mind truly perceives the world as transient and impermanent. Until then, as long as ego regarding the body, intellect, and mind remains, the sense of being the 'doer' and 'enjoyer' persists, making the cycle of pleasure and pain unavoidable.