This book discusses the pre-Buddhist influences of Dzogchen meditation in Tibetan Buddhism. Important symbols like the cosmology of the the vase of light which feature prominently in The Great Perfection myth arise from pre-Buddhist influences and comes from indigenous Tibetan motifs. Another important image that the author states comes from this milieu is the cosmic egg which is used later in the Nyingma scriptures. The concept of unearthing treasures is also an indigenously Tibetan motif which later influence the concept of terma (hidden treasures) in the Nyingma tradition. Stories of Buddhist scriptures as treasures being unearthed are inspired by the tales of royal kings descending from the sky and bringing vitality energy on flying sheep and deer, and hunting for such animals for their precious materials like conch shell coats, crystalline antlers, and long chases where the young hunter follows and injured animal throughout the whole land. All of these stories, narratives and symbols are from pre-Buddhist and indigenous motifs from Tibetan soil.
The author also highlights the significance of Kings in the ancient culture. Traditionally, kings were believed to have fortune ropes attached to their bodies, and this image was later internalised by the Buddhist yogis, wiith the original concept of acquiring vitality changed, and turned into a soteriology of freedom and liberation from the cycle of samsara, a phenomenon which occured due to the Buddhacisation of indigenous Tibetan practices and symbols. He provides examples of the influence that the ancient practices had on Dzogchen by describing the imagery of “deer-lamp tsitta,” the “far-reaching lasso,” “white silk thread,” “crystal tube,” or “buffalo horns.” which were all symbols of the hunter society specifically relating to the heavenly cord attached to the kings. Such symbols were then internalised in the practice of Dzogchen. Rather than kings and sky-cords, and celestian deers; it was now the yogis' inward meditations, their focus of latent energies within their bodies, through a network of luminosity consisting of deer, silk, crystal, or lassos, and finally engaging them in their perceptual field by domesticating them in the form of chained sheep.
The Dzogchen practitioners would imagine a buddha-field, be instructed to press into their eyes, to gaze into the skies and witness the vajra images that emerge from their vision, and eventually leave their bodies through their eyes, attain the rainbow bodies and merge into the sky. The Buddhist soteriology being linear and final, whereas the pre-Buddhist narratives about sky-cord and acquiring vitality were cyclical. He highlights this inherent contradiction and the scholar Longchempa's attempt to synthesise pre-Buddhist motifs with Mahayana Buddhism. Overall, the book is very dense and heavy in terminology, and is quite complicated. Some of these ideas I still haven't fully grasped, but it has thoroughly intrigued me to try to understand further the mysteriousness of Tibetan belief and practice. This book especially is helpful I find in the fourth chapter where it goes into the cognitive science angle. The book also goes into anthropology, and history and compares Tibetan shamanism to other forms of shamanism. All of this is helpful. Not an easy read, but a rewarding one.