"...a fascinating addition to those recent studies that ground the history of political economy and its methods in a cultural context infused with the complexities of Victorian scientific endeavor. More generally, this complex case study illustrates the vehement contests played out when methods borrowed from the sphere of the natural sciences have been applied to that of the moral sciences."
-Ben Marsden
"Maas is well versed in the literature and humanists can learn much from his book about the history of British economic thought and its ties to Victorian science from this fascinating and logically organized study of Jevon's 'mechanical reasoning.'"
-Gerald M. Koot, University of Massachusetts, Dartmouth, American Historical Review