Though Heretics by G.K. Chesterton is one of his best known works, I had not read it until a couple years ago. It is unspeakably brilliant and timelessly relevant to our current day. Here's an excerpt. I'll drop a few more from time to time:
"Reverence in the sad and delicate meaning of the term reverence is a thing only possible to infidels. That beautiful twilight you will find in Euripides, in Renan, in Matthew Arnold; but in men who believe you will not find it-- you will find only laughter and war. A man cannot pay that kind of reverence to truth solid as marble; they can only be reverent towards a beautiful lie."
