Despite the wide application of the metaphor of 'the tragedy of the commons', there is little historical literature that points to the weaknesses of its historical basis. There is, however, sufficient qualitative and quantitative evidence to prove that commons were well regulated and organized in order to achieve a sustainable management, that also took into account the needs and wishes of its commoners. This case study of a common in Flanders looks at the evidence for this in the eighteenth century, examining bookkeeping and other archival sources. A model that incorporates the different functions of the commons (sustainability, efficiency, and utility) is explained and applied. I n 1968, in his article 'The tragedy of the commons', Hardin described how a medieval common pasture was over-exploited due to the selfish behaviour of the villagers. 2 In his account, all inhabitants of the medieval European village could use the common pasture.There seemed to be no clear restrictions on access to the common, nor on the number of livestock each of the users could put on the common, nor was there a collective management (in terms of use and maintenance) of the land. Moreover, the commoners seemed not to communicate with each other about the use or management of their common. 3 This 'freedom on the commons' gave the commoner the incentive to put as many cattle on the common as he possibly could; after all, surely every rational herdsman would conclude that selfish behaviour was the most advantageous strategy for survival. As long as diseases and adversity decimated the cattle and the herdsmen from time to time, no real problems arose on the common. However, due to population growth, this freedom of use would eventually lead to the over-exploitation and degradation of the common; hence, 'the tragedy of the commons'. Internet searches and citation indexes confirm that it would be difficult to find a stronger or more widely used metaphor. Because Hardin made clear links among population issues, property rights, and environmental degradation, his ideas found an eager audience among