The ancient mystery of the "sun at midnight," symbolizes the spiritual light that lies hidden within the dark. The Celts knew that light emerges out of darkness and so their days began at dusk, as if the sun was seeded in the black earth of night.
The oak tree in full foliage praises the Creator, but in order to become the oak tree, the acorn has to open in the dark. Its roots have to reach deep into the earth as its branches stretch toward the light. There in the dark the shell has to crack. Only when I let go of my protective shell, when I find the crack makes me vulnerable, that opens me to the Other, only then will the night be radiant, only then will the dark be light... The spark is in everyone's soul: the spark of our Creator shining in the dark. This spark is ours to tend, to take care of until it flares into a brilliant flame, lit by God.