" In Ireland, the rivers find their source in the Otherworld; specifically in an Otherworld well or spring which, bubbling up from the earth, is surrounded by trees of wisdom. Five streams, said to be the five senses, flow from the spring. Salmon swim in that spring and eat the hazelnuts which fall, occasionally, into the water.  To eat a salmon from this water is to receive poetic inspiration and to drink from the water itself, in ecological interpretation, is to enter into a way of being that is consonant with the underlying patterns of the cosmos. "

― Jason Kirkey , The Salmon in the Spring: The Ecology of Celtic Spirituality