In "The Edge" by Dick Francis, the concept of lightheartedness is portrayed as a valuable asset amidst the prevalent struggles and challenges of life. The quote emphasizes that in a world often dominated by negativity, such as aggression and greed, the joy and levity of lightheartedness are often overlooked and sacrificed.

Francis suggests that while this treasure of lightness is crucial for well-being, it is frequently lost due to the weight of societal issues and unsettling traditions. The observation serves as a reminder of the importance of preserving joy in our lives, even when faced with formidable sorrows.