Niebla - Miguel de Unamuno What a peculiar little book! I read it about five years ago and find it way easier to understand this second time. It's very philosophical, full of musings and monologues and, may I say, free association. Some of the subjects mentioned are love, death, divinity, existence and reality. The author shakes and eventually smashes the fourth wall, providing strong arguments about reality and fiction, sanity and madness, clarity and mist.