Days of restless mind continue. These days, when nothing feels at ease, I wander through a bookstore and pick up *The Mirror of the Mind*. I am a Christian. Perhaps there are more parts of the monk's story that I do not understand. However, I like Sister Lee Hae-in's writing and love her simplicity. Leaving religion aside, my desire to find peace of mind is greater. Monk Cheongan... When I first saw the author's name, I stared at the cover for a long time, captivated by its unfamiliarity.