In "The Right Attitude to Rain," Alexander McCall Smith explores the nuances of love, particularly in the context of enduring challenges such as illness. The quote highlights a form of affection that is resilient and rooted in deep familiarity. This "old love" signifies a bond that withstands difficult circumstances, showcasing dedication and a profound understanding of one another over time.

The idea conveys that true love is not just about romantic notions but also about companionship and support during tough phases. It portrays a mature relationship where partners stand by each other, demonstrating that genuine love is often tested and strengthened through life's adversities.