In Celtic understanding . . . everyone sees themselves in relation to one another, and that extends beyond human beings to the wild creatures, the birds and the animals, the earth itself. This has brought a sense of being a part of the whole web of being. There is something here of "the breathing together of all things" as Teilhard de Chardin put it, something of the mystery of coinherence of which Charles Williams writes in his novels.
— Esther de Waal, The Celtic Way of Prayer