Everything you need to understand or teach Dreamer by Jack Butler.
In this novel as in its predecessors, Butler's themes include the nature and function of religion, the concept of love as an elemental, essential force in the universe, and the nature of reality and human intelligence.
Dreamer supplies the origin of the religion known as Buderianism in Nightshade.
In the earlier novel (but set a couple of centuries into the future, on Mars), the founder of the religion and author of its scripture...