The Left Hand of Darkness

Ursula K. Le Guin

Science fiction used the way the best of the form does, as an instrument for thinking about something the present can't see clearly. The book is about how much of what we think of as fixed about identity is actually contingent on biology, climate, and politics. There is also a loneliness in the protagonist's role that the book takes seriously. Who in the story gets to understand what is its own careful choice, and the reader is not always one of them.