G.k. Chesterton said this quote

“ And an even stronger example of Mr. Wells's indifference to the human psychology can be found in his cosmopolitanism, the abolition in his Utopia of all patriotic boundaries. He says in his innocent way that Utopia must be a world-state, or else people might make war on it. It does not seem to occur to him that, for a good many of us, if it were a world-state we should still make war on it to the end of the world. For if we admit that there must be varieties in art or opinion what sense is there in thinking there will not be varieties in government? The fact is very simple. Unless you are going deliberately to prevent a thing being good, you cannot prevent it being worth fighting for. It is impossible to prevent a possible conflict of civilizations, because it is impossible to prevent a possible conflict between ideals. If there were no longer our modern strife between nations, there would only be a strife between Utopias. For the highest thing does not tend to union only; the highest thing, tends also to differentiation. You can often get men to fight for the union; but you can never prevent them from fighting also for the differentiation. This variety in the highest thing is the meaning of the fierce patriotism, the fierce nationalism of the great European civilization. It is also, incidentally, the meaning of the doctrine of the Trinity. ”