I think the world would be a better place if we all read Ursula K. Le Guin when we were little. Or at least I know I would have benefited from being exposed to her much earlier.
A Wizard of Earthsea, The Dispossessed, The Left Hand of Darkness, Rocannon's World (in which she coined the word "#ansible"). Any book by Le Guin is worth reading. She is my favourite author of all time.