This book is about the life of Saint Durgacharan Nag, affectionately known as Nag Mahasaya. Originally written in Bengali by Sarat Chandra Chakravarty—a close disciple of Swami Vivekananda—this English volume is an adapted version designed to reach a broader international audience.

The book emphasizes that while Nag Mahasaya’s life lacked grand "external" achievements or dramatic worldly events, it was defined by extraordinary spiritual stature, humility, and "undemonstrative simplicity." He lived largely in the obscurity of the countryside, yet his character was so profound that even a casual reader would be struck by his spiritual depth. The author presents this narrative as a window into a life of pure humanity and quiet devotion.