We don't know yet how to build a society which is environmentally sustainable, which is shareable with everybody on the planet, which promotes stability and democracy and human rights, and which is achievable in the time-frame necessary to make it through the challenges we face.
Aún no sabemos cómo construir una sociedad que sea medioambientalmente sustentable, que sea compartible con todos en el planeta, que promueva la estabilidad, la democracia y los derechos humanos, y que sea alcanzable en el lapso de