The quote from Susan Cooper's "Silver on the Tree" emphasizes the importance of diligence and vigilance in the face of challenges. It suggests that those who are dedicated and attentive will ultimately prevail against negativity and adversity. The idea conveys a sense of hope and encouragement, underlining that persistent effort and care can lead to positive outcomes.

Moreover, the quote reflects a belief in the inherent struggle between good and evil, suggesting that while setbacks may occur, a concerted effort towards the betterment of oneself and the world can ensure that righteousness prevails. It serves as a reminder to remain conscientious and proactive, reinforcing the notion that our actions can shape the future for the better.