FROM Nation, State, and Economy by Ludwig von Mises

From the cosmopolitan standpoint, one must describe the splitting of mankind into different peoples as a circumstance that causes much trouble and costs. Much labor is spent on learning foreign languages and is wasted on translations. All cultural progress would make its way more easily, every contact between peoples would proceed better, if there were only one language. Even one who appreciates the immeasurable cultural value of diversity of material and intellectual arrangements and of the development of particular individual and national characters must admit this and must not deny that the progress of mankind would be made quite extraordinarily more difficult if there did not exist, besides the small nations numbering only a few hundred thousand or a few million souls, larger nations also.