Abstract
Forestry science is firmly based on the ideas of rationalization, emancipation, and progress as embedded in the Modernity Project. Its emergence in the late Seventeenth century is primarily a rationalization of timber production, although to some extend attention is given to other functions of the forest. As an applied science, forestry was preoccupied with bio-technical and economic research. The development in forestry science during the last four decades is described as a broadening of this narrow rationalization concept. Social and ecological dimensions of forestry are acknowledged as legitimate and undeniable fields for forestry research. The new rationalization concept is not yet operationalized, but encompasses besides economic efficiency also equity and ecological sustainability. Since the narrow rationalization concept resulted in irrational outcomes, the new concept of sustainable development might be characterized as a rationalization of the Modernity Project. As a critical counterpoint to this mainstream forestry thinking, a Non-modern Project is emerging. Indigenous forestry as an ethnoscience points at the cultural and philosophical biases still underlying professional forestry and forestry science