I read a fair amount of stuff, usually varies. I would say my reading consists of 3 parts SF / F / speculative fiction, 2 parts "classics" and 1 part non-fiction (usually science, mathematics, or philosophy). I don't read much history or popular fiction, and a lot of the "classics" tend to be 20th century ones (e.g., Catch-22). Back in the day I read a ton of older classics (Dostoevsky, Dumas, Cervantes, Austen, etc.) but I haven't reread many of those recently.