J. Edward Mercer 
Nature Mysticism 

If you're the sort of person who has no use for traditional spiritual systems of any sort and hope that somehow, someday, you can find spiritual meaning in the natural world around you, this book is for you. Mercer understood very well that the essential core of nature mysticism is to enter into a direct communion with the objects in the physical environment. It is very clear that he was able not only to succeed in this kind of communion, but to communicate his experiences with such clarity that all his insights are revelatory. It is interesting to note that apart from a few mentions of Daoism and other eastern systems of thought, Mercer approaches the natural world from a distinctly western perspective. The writers who have shown him how to find spiritual truth in nature are the great poets and philosophers of the western canon, not the eastern.