Earthsea is great. Ursula also wrote a lot of amazing science fiction: left hand of darkness, the dispossessed, the lathe of heaven, the word for world is forest etc. All are worth reading.
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Fundamentally changed are so big words but these were pretty cool: - Douglas Hofstadter's GEB: An Eternal Golden Braid - Debt: The First 5,000 Years by David Graeber - Ursula K. LeGuin's The Word for World is Forest - Propaganda by Edward Bernays - Collapse: How Societies Choose to Fail or Succeed by Jared Diamond - Empires: The Logic of World Domination from Ancient Rome to the United States by Herfried Münkler - Smedley D. Butler's War is a Racket (more of an exposé) - In Praise of Idleness by Bertrand Russell (ditto) - Neuromancer by William Gibson
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