It was a motley collection, these social Darwinists, and Mr Hermans has enough on his plate to find the common denominator. The risk appears of a portrait gallery of eminent Victorians, however ably painted; therefore the author at regular intervals takes up stock to determine what can really be called social Darwinist. (…) Mr Hermans makes us notice a number of important personalities, with their theories, who for a long time have been in everyone’s black book.
Samuel de Lange, Trouw, 29 November, 2003

The dissertation of Mr Hermans is a brave crusade against the pulverized idea of Social Darwinism that arose in the course of time.
Enne Koops in Historisch Tijdschrift Groniek, Groningen University, 2004

Analysing the works of social theorists such as Herbert Spencer, Alfred Russell Wallace, Ernst Haeckel, and Alfred Schäffle, as well as Darwin’s own work, Dr Hermans concludes that, although not a homogeneous ideology, different versions of social Darwinism all centred around the general notion that modern society could not, in the long run, disrupt natural selection without grave consequences.
International Review of Social History, vol. 51, 2006

Historian Cor Hermans has written a fascinating and highly readable, though rather sizeable, book on social Darwinian thought as it developed from the second half of the nineteenth century onward, mainly under the influence of the work of Darwin himself.
Paul Schnabel, NRC Handelsblad, 1-2 November, 2003