The quote from C.S. Lewis's "Mere Christianity" emphasizes the critical nature of the choices we face in our moral lives. It suggests that we are currently in a unique position where we can choose to align ourselves with goodness. This moment is significant because it acknowledges that divine patience is at play, giving us time to make the right decisions.

However, Lewis warns that this opportunity is not permanent. The sense of urgency is clear—there is a finite window for making these moral choices. We must recognize the importance of our decisions and take action, as the chance to choose the right path could eventually slip away.