Johann P. Arnason is professor emeritus of sociology at La Trobe University, and an editor-at-large of the journal Social Imaginaries. His many publications include Civilizations in Dispute: Historical Questions and Theoretical Traditions (Brill, 2003), Axial Civilizations and World History (ed. with S.N. Eisenstadt and B. Wittrock, Brill, 2005), The Roman Empire in Context: Historical and Comparative Perspectives (ed. with K. Raaflaub, Wiley-Blackwell, 2011), The Greek Polis and the Invention of Democracy: A Politico-Cultural Transformation and its Interpretations (ed. with K. Raaflaub and P. Wagner, Wiley-Blackwell, 2013), Social Transformations and Revolutions (ed. with M. Hrubec, Edinburgh University Press, 2016); and Anthropology and Civilizational Analysis (ed. with Chris Hann, forthcoming, SUNY Press, 2018).