Screw Your Brains Out: "Graham Greene: A Life in Letters" by Graham Greene
(Original Review, 2007-05-15)
There some odd little insights: about how people used to travel by sea and get horribly ill, but then air travel came along and changed all that; Greene's very Catholic attitude to extramarital sex - screw your brains out, go to Confession, go to Mass, go to Communion, come home, screw your brains out with partner not your wife, go to Confession ... (I'm Catholic so I think I can say these things).
If you're into stuff like this, you can read the full review.