The Summary of Physics Restored

23For when the Spirit of God, which is divinity's radiance, was poured over the waters at the very moment of creation—that is, over the moist and opaque face of the abyss—light immediately appeared. In the blink of an eye it seized the higher and subtler part of matter and enclosed it with a shining circumference like a border. It was like lightning casting fiery light from east to west, or a flame swiftly kindling the smoke beside it. Thus the first day arose, while the lower part of the darkness, empty of light, remained night. In this way darkness was divided into day and night.