This is how people live.  They rest at nights.  They rest at nights because they are tired, and don't have to worry about getting murdered. They rest at nights with open windows, nestled snugly with their lovers.  Not everyone lives this way.  Some people kill each other.  Some wonder what's to stop another?  Darkness isn't necessarily dangerous. It can be peaceful and soothing, like a satisfied sigh and a gentle breeze. Some people corrupt the nighttime.  Some people take drugs and turn the music really loud.  It is dark outside but they shut their blinds, and inside there is light and depravity.  Some people are peeping.  Some people are sick; and some are not very good.  The morning light brings a new day.  Some people bring darkness with them.