I recently finished The Great Divorce by C.S. Lewis. If you have not read it, I would definitely recommend it. It's less than 200 pages and a pretty easy read. In The Great Divorce, the narrator is taken to Heaven and Hell. Lewis claims in his introduction that he was not trying to paint pictures of Heaven and Hell. Rather, he wanted to challenge his readers to examine their actions in light of eternity. I gathered quotes as I went. Here are a couple:
"There are only two kinds of people in the end: those who say to God, 'Thy will be done,' and those to whom God says, in the end, 'Thy will be done.'"
"Ah, the Saved… what happens to them is best described as the opposite of a mirage. What seemed, when they entered it, to be the vale of misery turns out, when they look back, to have been a well; and where present experience saw only salt deserts, memory truthfully records that the pools were full of water.”