Must humanity go back to nature so as no to be exterminated by it? This is a question that constantly hits contemporary conscience. The widespread belief that we are undergoing a global environmental crisis leads us to the necessity of thinking about the kind of society we want. The truth is that the cultural change begun by the green movement four decades ago seems to have won: we all are, at last, green. Nobody questions the need of building a sustainable society. However, public debate about the environment, at the same time exaggerated and sentimental, is far from developing in the correct way. Nature has become humans’ environment; it couldn’t be otherwise. This premise must be the foundation of green politics in the future: realistic politics. And politics that declares the best values of the modern social order, to favour its gradual adjustment to environmental needs. The environmental crisis cannot become an excuse for another pending revolution. Can a society, instead, be green and liberal at the same time? It not only may, it must.