"We have long understood that if the worker is chained to his work for ten, twelve, or fourteen hours, he cannot possibly muster the energy necessary for his intellectual development. It is for this reason that the reduction of working hours has played such a prominent role in the modern labor movement, and I would argue that in addition to fighting for the recognition of the worker’s human dignity, the reduction of working hours has been the most important result of the international workers’ movement to this day."