C. S. Lewis
"When a man is getting better he understands more and more clearly the evil that is still left in him. When a man is getting worse he understands his own badness less and less."
"My heart--I need no other's--showeth me the wickedness of the ungodly" says C.S.Lewis, paraphrasing Psalm 36.
"A man can no more diminish God’s glory by refusing to worship Him than a lunatic can put out the sun by scribbling the word, ‘darkness’ on the walls of his cell."