You make me want to re-read Perelandra, something I never thought would cross my mind. I read it many times as a teen and then rejected it as too biblical and have never been back. Plus, it's hard to read it without remembering That Hideous Strength

But what I dropped in to say was about your introduction. Baird Searles, who was a science fiction critic (or reviewer) in the 1970s, now deceased, once told me (and I have never forgotten) that he found it much harder to review a good book than a bad one, because when he reviewed a really good book, he wanted his review to rise to the quality of the book, whereas with a bad book there were no such constraints.

I think this is true of me, too.