In the giving of costly entertainments other motives, of more genial kind, are of course also present. The custom of festive gatherings probably originated in motives of conviviality and religion; these motives are also present in the later development, but they do not continue to be the sole motives. The latter-day leisure-class festivities and entertainments may continue in some slight degree to serve the religious need and in a higher degree the needs of recreation and conviviality, but they also serve an invidious purpose; and they serve it none the less effectually for having a colorable non-invidious ground in these more avowable motives. But the economic effect of these social amenities is not therefore lessened, either in the vicarious consumption of goods or in the exhibition of difficult and costly achievements in etiquette. As wealth accumulates, the leisure class develops further in function and structure, and there arises a differentiation within the class. There is a more or less elaborate system of rank and grades. This differentiation is furthered by the inheritance of wealth and the consequent inheritance of gentility. With the inheritance of gentility goes the inheritance of obligatory leisure; and gentility of a sufficient potency to entail a life of leisure may be inherited without the complement of wealth required to maintain a dignified leisure. Gentle blood may be transmitted without goods enough to afford a reputably free consumption at one's ease. Hence results a class of impecunious gentlemen of leisure, incidentally referred to already. These half-caste gentlemen of leisure fall into a system of hierarchical gradations. Those who stand near the higher and the highest grades of the wealthy leisure class, in point of birth, or in point of wealth, or both, outrank the remoter-born and the pecuniarily weaker. These lower grades, especially the impecunious, or marginal, gentlemen of leisure, affiliate themselves by a system of dependence or fealty to the great ones; by so doing they gain an increment of repute, or of the means with which to lead a life of leisure, from their patron. They become his courtiers or retainers, servants; and being fed and countenanced by their patron they are indices of his rank and vicarious consumer of his superfluous wealth. Many of these affiliated gentlemen of leisure are at the same time lesser men of substance in their own right; so that some of them are scarcely at all, others only partially, to be rated as vicarious consumers. So many of them, however, as make up the retainer and hangers-on of the patron may be classed as vicarious consumer without qualification. Many of these again, and also many of the other aristocracy of less degree, have in turn attached to their persons a more or less comprehensive group of vicarious consumer in the persons of their wives and children, their servants, retainers, etc.