"This is an excellent work. The author explains very well and with considerable clarity Feuerbach s ideas - no small accomplishment, in view of the notoriously cloudy language of Hegelian philosophy. Caldwell s demonstration of the influence of Feuerbach s thought on the figures he considers (an interesting and very diverse group of individuals) is eminently convincing." - Jonathan Sperber, Curator's Professor and Department Chair, Department of History, University of Missouri

"A fine, innovative work of intellectual history. Caldwell reconstructs a sometimes overlooked side of the philosophical origins of the history of German radical thought, unearthing some of its forgotten potential for later counter-cultural movements, but also showing how, in the hands of Wagner, one current of post-Feuerbachian thought veered into more dangerous waters of myth and racism." - Dr. Andrew Bonnell, Senior Lecturer, History and Convener of History discipline, School of HPRC, University of Queensland, Australia