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Mr Stuart-Glennie regards the slave-morality as an invention of the superior white race to subjugate the minds of the inferior races whom they wished to exploit, and who would have destroyed them by force of numbers if their minds had not been subjugated.
We thus re-interpret the vicissitudes of history in more general terms, those of the differentiation, progress or degeneracy of each occupational and social type, and the ascending and descending oscillations of these types. In short, these occupational struggles underlie and largely interpret even the conflict of races, upon which Mr. Stuart-Glennie and other sociologists have so ably insisted.
As Mr Stuart-Glennie traced the evolution of society to the conflict of races, his theory made some sensation among Socialists that is, among the only people who were seriously thinking about historical evolution at all by its collision with the class-conflict theory of Karl Marx.