Patriotism of the nationalistic type, so far from being taught in schools, ought to be mentioned as a form of mass-hysteria to which men are unfortunately liable, and against they need to be fortified both intellectually and morally. Nationalism is undoubtedly the most dangerous vice of our time. Source:Education and the Social Order, 1932, chap. 10:Patriotism in Education (George Alen and Unwin ed.) p.138.