In the book "Into the Wild" by Jon Krakauer, the author compares Chris McCandless and Richard Ruess to Ancient Irish Monks. This comparison is made because both McCandless and Ruess were young men who ventured into the wilderness alone, seeking spiritual enlightenment and a deeper connection with nature. They both embraced a minimalist lifestyle, rejecting material possessions and societal norms. The Ancient Irish Monks were known for their solitary journeys, living in remote places and practicing asceticism. Krakauer sees similarities between the monks and McCandless/Ruess in their pursuit of a higher purpose and their willingness to endure hardships in order to find it.