How does the scripture explain the impermanent and ever-changing nature of the human body and life itself?

Chapter 8 uses powerful analogies to illustrate the concept of impermanence. It compares the body's existence to the flame of a lamp, which appears constant but is different every single moment. It also notes how the stages of life—childhood, youth, and old age—transition into one another without anyone noticing the precise moment of change. The text states, 'What is seen one moment perishes the next; though it seems singular, it is infinite.' This philosophical view underscores that the body is in a constant state of flux and that death is an ever-present possibility, making spiritual practice an urgent necessity.