Some think the night's a transparent stranger,
Some think the night's an opaque friend;
And though some nights are fraught with danger,
Day to night, it's shadows lend.
Night gives day cold stars invisible,
Night gives day a moon half lit;
If night and day could trade their faces,
Each the others grey, befit.
Patti Masterman
http://www.poemhunter.com/poem/some-think-the-night/