The Sacred Universe: Earth, Spirituality, and Religion in the Twenty-first Century
Journey of the Universe
Coming Back to Life: The Updated Guide to the Work that Reconnects
The Heart of Centering Prayer: Nondual Christianity in Theory and Practice
Greening of the Self
The Divine Milieu
The Christian Future and the Fate of Earth (Theology in a Global Perspective)
Nature and the Human Soul: Cultivating Wholeness and Community in a Fragmented World
The Heart of Matter