His books include Kali's Child, Esalen, Authors of the Impossible, The Serpent's Gift, Mutants and Mystics, The Supernatural (with Whitley Strieber), and Secret Body.
Here he describes his intellectual journey starting with the study of eroticism in religion and leading him into the study and appreciation of the esoteric or paranormal.
His early research focused on homoeroticism in the life of the nineteenth century Hindu saint, Ramakrishna.
In India, he experienced a profound state of consciousness associated with the goddess Kali.
Later he worked with Whitley Strieber, a UFO contactee, and describes a striking correspondence between Strieber's experience of the Visitors -- and his understanding of Hindu goddesses."