The Dispossessed begins on Annares, a barren but mineral-rich moon to which the planet Urrastes’ anarcho-syndicalist rebels have accepted their banishment. In the 200 years since, doctrines of freedom have begun to harden into orthodoxies. Thus, although not forbidden, a physicist’s journey to work in cooperation with his peers and colleagues on the verdant, highly unequal planet-of-origin is treated with hostility. He arrives just as a revolution is brewing;  we see, from his perspective, the imperfections of his own ‘ambiguous utopia’; explore comparative freedoms; gender roles, approaches to the needs of the one and the many. Winner of both the Hugo and Nebula Awards, The Dispossessed  is Le Guin’s fictional working-through of how an anarchist society might work for real.

if you can’t get hold of a copy, the whole book has, rather fittingly, been transcribed and uploaded here:  http://theanarchistlibrary.org/library/ursula-k-le-guin-the-dispossessed