The quote reflects a poignant realization about the fleeting nature of time and the impossibility of reclaiming lost moments. The speaker regrets the hours spent in sleep, recognizing that time is one of the most precious resources we have and once it's gone, it cannot be recovered. This sentiment highlights a common struggle many face as they try to balance rest and productivity.

In the context of Alison Weir's "The Lady Elizabeth," this idea may also resonate with the themes of ambition and the pursuit of purpose. The character's reflection on wasted time suggests a deeper awareness of life’s impermanence, prompting a sense of urgency to make the most of every moment. Ultimately, the quote serves as a reminder to prioritize meaningful experiences over idleness.