The quote from Margaret Atwood's "The Tent" reflects on the process of self-discovery and the complexities of crafting one's life narrative. The speaker conveys the idea that instead of simply assembling their life story into a coherent narrative, they are actively deconstructing it. This suggests a journey of introspection where the past is examined and dissected rather than presented as an idealized tale.

Additionally, the mention of having once known everything indicates a shift from certainty to uncertainty. The use of "scissors" and "matches" symbolizes the choices made to cut away parts of the past or burn them down entirely. It emphasizes a more profound understanding that comes with time and experience, suggesting that life narratives are not just constructed but can also be redefined and rewritten through reflection.