Chapter 17 mentions that 'true manhood (Purushartha) is born' when one seeks to stop the wheel of existence. Can you elaborate on this concept and its connection to suffering, as explained in the chapter?

Chapter 17 presents a profound philosophical sequence where suffering becomes a catalyst for spiritual seeking. The text explains that the 'unfathomable wheel of worldly existence (Samsara)' causes man to suffer from 'three unendurable torments (Tritapa).' According to the chapter, it is only after being exhausted by this extreme sorrow that a person begins to search for a way to stop the cycle. This investigation into how the wheel of existence can be halted marks a pivotal moment. The chapter states that when this thought arises, 'true manhood (Purushartha) is born.' This means that the true purpose and effort of human life begin when one consciously decides to seek liberation from suffering and chooses the means for their own true self-interest, which is the path of Shreya.