The Devil

The devil believes in God but he has no God. The Lord is not his God. To be at enmity with life is to have nothing to live for. To live forever without life is everlasting death: but it is a living and wakeful death without the consolation of forgetfulness. Now the very essence of this death is the absence of hope. The damned have confirmed themselves in the belief that they cannot hope in God. We sometimes think of the damned as men who think of only themselves as good, since all sin flows from pride that refuses to love.
 
But the pride of those who live as if they believed they were better than anyone else is rooted in a secret failure to believe in their own goodness. If I can see clear enough to realize that I am good because God has willed me to be good, I will at the same time be able to see more clearly the goodness of other men and of God. And I will be more aware of my own failings. I cannot be humble unless I first know that I am good, and know that what is good in me is not my own, and know how easy it is for me to substitute an evil of my own choice for the good that is God's gift to me.
 
~ Thomas Merton, No Man Is an Island