It may be observed that the increased heterogeneity which the development of modern industry has brought with it, in the form of a specialisation of industrial functions which tends to render the lives of individual workers narrow and monotonous, has usually been regarded by philanthropists as seriously infelicific; and as needing to be counteracted by a general diffusion of the intellectual culture now enjoyed by the few---which, if realised, would tend pro tanto to make the lives of different classes in the community less heterogeneous.
ME Book 4 Chapter 4 Section 3