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
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