"An effective defense of the must begin with an empirically-minded account of its complex inner workings and its surpassing value. Liberal is humanity's greatest achievement. That may sound like hype, but it’s the cold, hard truth. The liberal state, and the global traffic of goods, people, and ideas that it has enabled has led to the greatest era of peace in history, to new horizons of practical knowledge, health, wealth, longevity, and equality, and massive decline in desperate poverty and needless suffering. It’s clearer than ever that the multicultural, liberal-democratic, capitalist welfare state is far-and-away the best humanity has ever done."