The quote emphasizes the importance of preserving one's life and the potential for change that comes with it. C.S. Lewis suggests that no matter how challenging the situation may be, there is always a chance for positive outcomes. By choosing to live, individuals remain open to the possibilities of good fortune that life might bring. This notion encourages resilience and hope during tough times.

Furthermore, the idea that "all the dead are dead" reinforces the finality of death. Unlike the living, who can still experience growth and transformation, those who have died cannot participate in life's opportunities. This serves as a reminder to value life and make the most of it, as every moment carries the potential for new beginnings and positive change.