The repose of sleep refreshes only the body. It rarely sets the soul at rest. The repose of the night does not belong to us. It is not the possession of our being. Sleep opens within us an inn for phantoms. In the morning we must sweep out the shadows.
Traditionally scientists have treated the laws of physics as simply 'given ' elegant mathematical relationships that were somehow imprinted on the universe at its birth and fixed thereafter. Inquiry into the origin and nature of the laws was not regarded as a proper part of science.