The Elements of Pantheism
Paul Harrison

An excellent introduction into the history, beliefs, and practices of pantheism. Harrison is the president of the World Panthiest Movement, which is a scientific pantheist organization.

The Story of B
Daniel Quinn

A novel with many themes relating to human history, evolution, and culture, with particular emphasis on animism. All of Quinn's books include bits on animism, but this book has the most. The narrator is a Catholic priest who is sent to investigate a possible Antichrist, and soon finds himself losing his faith.

Lame Deer, Seeker of Visions
John Fire Lame Deer and Richard Erdoes

In his own words, Sioux medicine man Lame Deer tells the story of his life and describes his animistic/pantheistic spirituality.

God Is Red
Vine Deloria, Jr.

This classic work gives an overview of Native religion and philosophy, comparing it with Christianity. Deloria says "we are a part of nature, not a transcendent species with no responsibility to the natural world."

Drawing Down the Moon
Margot Adler

The definitive scholarly work on Paganism in America. Adler discusses the origins of the movement, surveys many forms of Paganism (with a particular emphasis on witchcraft), and analyzes both the diversity of belief and the common threads that seem to run through all forms. Many of the people she talked to described their beliefs as animistic or pantheistic. The book was written in 1978 and updated in 1985, so it's a little out of date, but it's still very relevant.

Tom Brown's Guide to Wilderness Survival
Tom Brown, Jr.

This and the other books in the series are mainly about survival skills, but also explain Tom Brown's spirituality and stewardship philosophy. His Field Guide to Wild Edible and Medicinal Plants is especially interesting, delving into the world of sacred plants, which is something that's usually ignored. His book The Vision is more specifically about religion and spirituality.

The Spell of the Sensuous
David Abram

Throughout this lyrical book, Abrams describes the power that animates all things, and gives a wonderful explanation of how humans fit into the community of life.

Earth Prayers from Around the World
Ed. Elizabeth Roberts and Elias Amidon

Quotes and prayers honoring nature, from famous people and religious traditions around the world.

The Holy Bible
Various Authors

Most of the Bible is lists of begats and accounts of God smiting people, but there are a few nice stories in here. I especially like the Sermon on the Mount, and Psalms is very beautiful. Also, it's really useful to have some experience with the sacred text of the most common religion in our culture, even for those of us who aren't Christian. And it's fun finding things that are completely absurd, or that contradict with other things, which helps if you ever get in a debate with a Christian.

Full House: The Spread of Excellence from Plato to Darwin
Stephen Jay Gould

I've read several of his books, but this one is my favorite. Its central theme is the origin of complexity in evolution and the questionable but pervasive belief that humans are the purpose or crowning achievement or whatever of evolution. It really gives you perspective to realize that though we're more complex than other species, we're far less successful by evolution's standards.

The Blind Watchmaker: Why the Evidence of Evolution Reveals a Universe Without Design
Richard Dawkins

Dawkins' books on evolution are excellent, particularly The Selfish Gene, but he is also well known as an atheist, and this book delivers a powerful argument against "intelligent design" (read: creationism). The title comes from a classic creationist argument which Dawkins promptly rips to shreds.

Tao Te Ching
Lao Tzu

The classic little philosophy book that founded Taoism, very poetic and pantheistic. One translation says, "Every being in the universe is an expression of the Tao. It springs into existence, unconscious, perfect, free, takes on a physical body lets circumstances complete it. That is why every being spontaneously honors the Tao."

Leaves of Grass
Walt Whitman

Whitman is probably the single most important American poet. But that's not why I like him; I like him because his poetry is absolutely gorgeous, and filled with pantheism, Quakerism, pacifism, abolitionism, and sly references to gay sex (i.e. "Calamus"). I prefer the Modern Library "Death Bed" edition, which includes "Drum Taps" (written after his stint as a nurse during the Civil War), and "Oh Captain My Captain" (a beautiful poem about Lincoln's death).

Mutant Message Down Under
Marlo Morgan

A novel about an American woman who takes a trip to Australia and finds herself on a walkabout with a group of Aborigines. When she returns to civilization three months later, she is changed physically, but even more mentally and spiritually, with a profoundly different view of the world.

The Red Tent
Anita Diamant

An amazingly beautiful novel based on the life of Dinah, a character from Genesis who gets brief mention in the Bible. Diamant takes the outlines of Dinah's story and retells it from a woman's perspective, making the center of Dinah's life the red tent where her four mothers rest during menses and give birth. I really think that every woman in the Western world should read this book. And I guess the men too.