Ruess and McCandless remind Krakauer of Ancient Irish Monks because they all share a similar sense of adventure, independence, and desire to explore the world. Like the Irish Monks who ventured into the harsh and unknown landscapes of Ireland, Ruess and McCandless also sought solitude and connection with nature in their respective journeys. They all embraced a nomadic lifestyle and were driven by a spiritual quest for self-discovery and enlightenment. Krakauer sees parallels between their experiences and admires their courage and determination.