"The Left Hand of Darkness" tells about the mission of Genly Ai, an ambassador of the Ekumen to Winter. The Ekumen is a union of most of the known planets, and Winter is a faraway planet still in its glacier period where all people are of the same gender. Genly Ai goes to Karhide and Orgoreyn, the main countrylike territories on Winter to try to convince them to join the Ekumen. Le Guin describes an inspiring world, very different from what we know, where there are no "men" or "women", but only PEOPLE, and where pride is a completely different concept. Being both an alien and a man, Genly Ai has to go through various experiences to learn different meanings of country, friendship, pride and love, and together with him we are indulged in reflecting more about these things and the world that we (don't) know. I would recomment this book not only to science fiction friends, but also to everyone who likes to think while they read.