I love thinking about lighthouses when I think of this. This is the first icon I think of when pondering the meaning of being a light in darkness. Without knowing its purpose, it's easy to look at it and dismiss it as a tall obstruction in the middle of nowhere.

One bad apple spoils the bunch. The early bird catches the worm. All that glitters is not gold. You’ve probably heard some of those or dozens of others. These sayings help teach us a moral lesson, some which have proven to be too true more than once over the years.