An Interesting Insight

I'm reading this series by Dean Koontz. The first book is called Odd Thomas, and it's the adventures of a young man named, as I'm sure you can guess, Odd Thomas. He sees ghosts and tries to bring killers to justice. They are wonderful books, I'm on the third. They are clever and I always laugh, but they are thought provoking and great stories. Anyway, I read a paragraph that really struck me:

In this world where too many are willing to see only the light that is visible, never the Light Invisible, we have a daily darkness that is night, and we encounter another darkness from time to time that is death, the deaths of those we love, but the third and most constant darkness that is with us every day, at all hours of every day, is the darkness of the mind, the pettiness and meanness and hatred, which we have invited into ourselves, and which we pay out with generous interest.

Something for you, and me, to chew on.