'Kühl's book fills a research gap that has existed for quite some time. It provides evidence that racial hygiene and eugenics were part of a closely intertwined international movement. This is an extremely compelling correction of the great simplifications that have reigned until now. The book urges us to be skeptical about contemporary fashions in academic study and the use that has been made of them by policymakers. Required reading!' - Peter Weingart, Professor of Sociology, University of Bielefeld, Germany
'Stefan Kühl's clearly presented book deals with a history that in an oppressive way is not over yet. The author takes the historical analysis of the eugenic-race hygiene dream of genetically perfect people out of their national contexts, and impressively reconstructs the international dimensions of this phenomenon. The book constitutes a quantum leap forward from current historiography.' - Jakob Tanner, Professor of History, University of Zürich, Switzerland