Leopold Kohr (1909-1994) Professor of economics and political philosophy, he is known for his theory of magnitude in social organization, inspiring the Small is beautiful movement. He was a journalist in 1937, during the Spanish Civil War. After Germany invaded Austria in 1938, he emigrated to the United States, where he developed the concepts of "village renewal" and "traffic calm." He was a mentor of the Plaid Cymru, a Welsh independence party with a Social Democratic cut. Kohr applied the notion

from scale to social analysis, as a critique of the modern development model. The Collapse of Nations (1957), inaugurates a social morphology beyond Durkheimian relativism. Other important works of his are: Disunion Now (1941), Is Wales Viable? (1971), The Inner City: From Mud To Marble (1989).