Thanks to my sister for this passage from Future Men by Douglas Wilson (which I have not read). Most of it is a quote from The Voyage of the Dawn Treader.
Eustace Scrubb had stumbled into a dragon’s lair, but he did not know what kind of place it was. “Most of us know what we should expect to find in a dragon’s lair, but, as I said before, Eustace had read only the wrong books. They had a lot to say about exports and imports and governments and drains, but they were weak on dragons.”