The Celtic Cosmos
The land of the Living: The land of youth, and the blessed ones. The dwelling place of the eternal self when it is not in a body. This realm infuses, surrounds and contains the world of the Sidh and the human World. It is infinite, knowing no corporal, spatial or temporal limits.
The Fairy Realm: The world of the Sidhe, Gods, Goddess and the ancestors. The otherworld of the fairies infuses the human world at all times.
The human world: The world of humans, nature, life. The self is accompanied by a body in this world, and its perceptions are determined by the natural senses. Druids can learn awareness of the eternal self while incarnate and thereby gain some understanding of the interpenetrating world of the Sidhe and of immortal existence in the land of the living.