"The need for laziness works against economic calculations and relates to it only to the extent that human beings are physically incapable of being able to work, being able to produce, for twenty-four hours each day. But the extent to which people need rest and play is negatively related to the need for work: the economic calculation made is that people need enough rest to make them fit enough to work as hard as possible and produce as much as they can. Even slave owners had to give their slaves time for recreation, otherwise they would cease to provide the optimum return on the investment made in them as productive entities. The economy of slavery represents capitalism in its extreme form, in which its principle is taken to its logical conclusion. In this extreme form it does not work: it is recognized that slavery is an inefficient labor system since the salve ( the epitome of a person reduced to the level of a thing) is incapable of producing to optimum effect. Therefore an economy of leisure has to be recognized to some extent by capitalism, which it offers as a concession. This concession is defined by work- it is not leisure of itself, but as a necessary respite from the rigors of production and which serves to regulate and allow the economy to function to the maximum of its capacity. But at the same time, the need for leisure, especially the need for laziness in itself, is perceived as a curse: it drains the productive forces and undermines the society of accumulation that capitalism ( which is also the society of restricted economy) inevitably is."