For Rauschenbusch, the Christian faith had a "revolutionary" potential.

Brian McLaren’s 'The Galápagos Islands: A Spiritual Journey' is both a travelogue and a spiritual memoir.

The eco-spiritual ideas so evident in the books are not present, but they may appear in Season 2.

In her fourth book, The Virgin of Prince Street: Expeditions Into Devotion, Sonja Livingston introduces herself as a “pilgrimess” returning to her childhood church in Rochester, N.Y., after not regularly attending Mass for 20 years.

Richard Powers’s brilliant novel, ‘The Overstory,’ which won the the 2019 Pulitzer Prize in Fiction, is a story about people who feel a kinship with all ecological life.

In Solid Seasons, Jeffrey S. Cramer explores the deep friendship between the two literary titans.