Have you ever noticed how light and dark are used to denote good and evil? Or positive and negative? Here are some common phrases.
He “saw the light.” (He understood.) “Light at the end of the tunnel.” (Hope that the end of a problem or difficult situation is near.) “Shed light on.” (Help to explain.) She “lit up the room with her presence.” (made the atmosphere or others happy.) Her face “lit up when she saw him.” (She was happy.) Or, “he’s brilliant!” (He’s super-smart!)
On the other hand, there’s “she’s in the dark” (she doesn’t know), ” Prince of darkness” (the devil, evil). Or “his mood was dark” (he was gloomy, hopeless, depressed), “he had a dark look on his face” (sinister, angry look).
Maybe you can think of other examples. Light reveals, brings hope, understanding, and literally and figuratively brightens our days. Dark hides, depresses, frightens and conceals. In fact, there’s a condition called Seasonal Affective Disorder, which is severe depression caused by lack of sunshine.
Just for fun, go to a Bible reference such as http://biblegateway.com, and do a word search on “dark” and “light.” It’s really interesting to see how many times these words are used and how they’re used.
Until later, here’s wishing you a brilliant day!