I have broad interests, and read a good deal of non-fiction. Recent works in progress include Macaulay's Essays, Northfrop Frye's _Anatomy of Criticism_, Erich Auerbach's _Mimesis - The Representation of Reality in Western Literature_, Fredrich Schiller's _History of the Thirty Year's War_, and a few random computer technical volumes.
I tell people I've always read anything that didn't read me first, and some that did.
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Dennis