In "The Subtle Knife," Serafina gains a profound insight related to the concept of pilgrimage, which is beyond the vocabulary of witches. She begins to grasp the significance that such journeys hold, especially for those who dedicate years or even lifetimes to travel in search of something meaningful. It reveals a deeper understanding of commitment, reverence, and the transformative power of proximity to important experiences.

Through this understanding, Serafina realizes that such travels and connections leave lasting impressions on a person’s soul. Being near what they cherish changes them fundamentally, enriching their existence in ways that linger long after the moment has passed. This reflection highlights the emotional and spiritual dimensions of devotion—elements that resonate deeply with the experiences of both characters and readers alike.