The Utopianism of the standpoint which expects an era of peace and retrenchment of militarism in the present social order is plainly revealed in the fact that it is having recourse to project making. For it is typical of Utopian strivings that, in order to demonstrate their practicability, they hatch "practical" recipes with the greatest possible details. To this also belongs the project of the "United States of Europe" as a basis for the limitation of international militarism.

Peace Utopias (1911)