This requirement of conspicuous waste and of ceremonial cleanness from the traces of industry extends also to the apparel, and in a less degree to the food, which is consumed on sacred holidays; that is to say, on days set apart--tabu--for the divinity or for some member of the lower ranks of the preternatural leisure class. In economic theory, sacred holidays are obviously to be construed as a season of vicarious leisure performed for the divinity or saint in whose name the tabu is imposed and to whose good repute the abstention from useful effort on these days is conceived to inure. The characteristic feature of all such seasons of devout vicarious leisure is a more or less rigid tabu on all activity that is of human use. In the case of fast-days the conspicuous abstention from gainful occupations and from all pursuits that (materially) further human life is further accentuated by compulsory abstinence from such consumption as would conduce to the comfort or the fullness of life of the consumer. It may be remarked, parenthetically, that secular holidays are of the same origin, by slightly remoter derivation. They shade off by degrees from the genuinely sacred days, through an intermediate class of semi-sacred birthdays of kings and great men who have been in some measure canonized, to the deliberately invented holiday set apart to further the good repute of some notable event or some striking fact, to which it is intended to do honor, or the good fame of which is felt to be in need of repair. The remoter refinement in the employment of vicarious leisure as a means of augmenting the good repute of a phenomenon or datum is seen at its best in its very latest application. A day of vicarious leisure has in some communities been set apart as Labor Day. This observance is designed to augment the prestige of the fact of labor, by the archaic, predatory method of a compulsory abstention from useful effort. To this datum of labor-in-general is imputed the good repute attributable to the pecuniary strength put in evidence by abstaining from labor. Sacred holidays, and holidays generally, are of the nature of a tribute levied on the body of the people. The tribute is paid in vicarious leisure, and the honorific effect which emerges is imputed to the person or the fact for whose good repute the holiday has been instituted. Such a tithe of vicarious leisure is a perquisite of all members of the preternatural leisure class and is indispensable to their good fame. Un saint qu'on ne chôme pas is indeed a saint fallen on evil days.