It has already been pointed out that these latter classes, which live by, rather than in, the industrial process, are roughly comprised under two categories (1) the leisure class proper, which is shielded from the stress of the economic situation; and (2) the indigent classes, including the lower-class delinquents, which are unduly exposed to the stress. In the case of the former class an archaic habit of mind persists because no effectual economic pressure constrains this class to an adaptation of its habits of thought to the changing situation; while in the latter the reason for a failure to adjust their habits of thought to the altered requirements of industrial efficiency is innutrition, absence of such surplus of energy as is needed in order to make the adjustment with facility, together with a lack of opportunity to acquire and become habituated to the modern point of view. The trend of the selective process runs in much the same direction in both cases. From the point of view which the modern industrial life inculcates, phenomena are habitually subsumed under the quantitative relation of mechanical sequence. The indigent classes not only fall short of the modicum of leisure necessary in order to appropriate and assimilate the more recent generalizations of science which this point of view involves, but they also ordinarily stand in such a relation of personal dependence or subservience to their pecuniary superiors as materially to retard their emancipation from habits of thought proper to the regime of status. The result is that these classes in some measure retain that general habit of mind the chief expression of which is a strong sense of personal status, and of which devoutness is one feature. In the older communities of the European culture, the hereditary leisure class, together with the mass of the indigent population, are given to devout observances in an appreciably higher degree than the average of the industrious middle class, wherever a considerable class of the latter character exists. But in some of these countries, the two categories of conservative humanity named above comprise virtually the whole population. Where these two classes greatly preponderate, their bent shapes popular sentiment to such an extent as to bear down any possible divergent tendency in the inconsiderable middle class, and imposes a devout attitude upon the whole community.