You can’t see light unless you are in the shadows or the dark. Turn your lights on during a sunny day, and you’ll never know they’re shining. The sun streaming in your windows bathes everything in a natural light. You don’t seek to turn on your lamps when you feel you have enough light already. But spend awhile in the dark, and you’ll soon be longing for any semblance of light.

The amount of light we need is also relative. Those who live in the city become accustomed to a huge amount of light –from streetlamps, buildings, signs, and roadways. If electricity fails and the lights go out, it feels like a strange and lonely place. Those who live in the country however with no streetlamps on the roads and few houses for miles experience a very different kind of life. Driving on winding, countr…