The quote reflects a deep emotional pain and confusion stemming from unexpressed feelings. The sentiment of having one's heart shattered implies experiencing tremendous emotional distress, suggesting that misunderstandings or uncommunicated truths can lead to heartbreak beyond what one thinks is possible. This evokes a sense of loss and fragility in human connections.

Moreover, the question posed highlights a common frustration with communication. It suggests that the inability to articulate feelings at the right moment can have severe consequences. The author, Jonathan Safran Foer, captures the struggle individuals face regarding vulnerability and honesty, raising the inquiry of why people often hold back their true emotions, leading to regret and heartache.