Infinite space and changing time are surrounding the material world. It is so majestic, unfathomable and intangible. Meanwhile, we are so tiny. Paradoxically yet, we are considering ourselves the almighty rulers of this Universe, demanding the sun to shine down on us in the day, and the fidgety stars to blink at us at night. We are “employing” the  Universe even at night. Let us stop. Let us look at the Earth through the eyes of the stars. The Earth is asleep, and it is peacefully quiet around. Let us allow the night lights some rest. Let us remain in darkness, guarding the sleep of our Universe.