In "A Soldier of the Great War" by Mark Helprin, the theme of mortality is vividly compared to coldness, emphasizing its unchangeable nature. The protagonist, Alessandro, reflects on how human arrogance and solidarity cannot alter the reality of death. It suggests that when faced with mortality, individuals will ultimately be struck by a profound sense of shock and amazement at the fragility of life. This realization brings one down to their knees in humility, confronting the inevitable truth of existence.

Alessandro's father emphasizes that each person must discover their own source of strength or purpose to navigate life's challenges. He suggests that without this personal journey, any guidance he offers will merely be an empty call to action. The father’s words imply that true understanding and resilience come from within, and it is essential for Alessandro to seek out his own "sword" and "shield" to face the trials of life and death effectively.