In John O'Donohue's "Anam Cara: A Book of Celtic Wisdom," the quote reflects the significance of our memories in shaping our present. The idea that our soul acts as a priestess of memory suggests that it plays a vital role in how we process and cherish our past experiences. This metaphor emphasizes the selective nature of memory, where we sift through the vast array of our memories to identify those that still hold meaning for us.

Furthermore, O'Donohue highlights the importance of nurturing our memories as they accumulate over time. By gathering these experiences, we create a rich tapestry of our lives that informs and enriches our current state of being. This process invites us to remain present and engaged with our lives, allowing the essence of our past to enhance our understanding of ourselves in the present moment.