Nature was always vital in Thomas Merton's life, from the long hours he spent as a child watching his father paint landscapes in the fresh air, to his final years of solitude in the hermitage at Our Lady of Gethsemani, where he contemplated and wrote about the beauty of his surroundings. Throughout his life, Merton's study of the natural world shaped his spirituality in profound ways, and he was one of the first writers to raise concern about ecological...