"And that which doth not edify is not of God, and is darkness. That which is of God is light, and continueth in God, receiveth more light, and that light groweth brighter and brighter until the perfect day. And again, verily I say unto you, and I say it that you may know the truth, that you may chase darkness from among you." -D&C 50: 23-25
I love this scripture because it shows that once we show God that we can handle what knowledge he gives us, and that we want to learn more, he gives it to us. It's a never-ending process of continual growth that can chase our darkness away if we let it.
There's my spiritual thought for the day :)