The institution of a leisure class is found in its best development at the higher stages of the barbarian culture; as, for instance, in feudal Europe or feudal Japan. In such communities the distinction between classes is very rigorously observed; and the feature of most striking economic significance in these class differences is the distinction maintained between the employments proper to the several classes. The upper classes are by custom exempt or excluded from industrial occupations, and are reserved for certain employments to which a degree of honour attaches. Chief among the honourable employments in any feudal community is warfare; and priestly service is commonly second to warfare. If the barbarian community is not notably warlike, the priestly office may take the precedence, with that of the warrior second. But the rule holds with but slight exceptions that, whether warriors or priests, the upper classes are exempt from industrial employments, and this exemption is the economic expression of their superior rank. Brahmin India affords a fair illustration of the industrial exemption of both these classes. In the communities belonging to the higher barbarian culture there is a considerable differentiation of sub-classes within what may be comprehensively called the leisure class; and there is a corresponding differentiation of employments between these sub-classes. The leisure class as a whole comprises the noble and the priestly classes, together with much of their retinue. The occupations of the class are correspondingly diversified; but they have the common economic characteristic of being non-industrial. These non-industrial upper-class occupations may be roughly comprised under government, warfare, religious observances, and sports.