Abstract
We point out the need to clarify some of the ideas related to the connection between development and sustainability in the Report of the Open Working Group of the General Assembly on Sustainable Development. In particular, the meaning of ‘sustainable’ is not clear when applied to specific areas of human activity. A more detailed explanation of the kind of equality sought for in the proposal is also needed. Because of potential conflicts between goals, we miss some considerations on the impact of population increase both on development and on sustainability. A distinction is made here between two kinds of goals included in the Report. Some of the proposed 17 goals can then be seen as ends in themselves, whereas others seem to be means for the first set. The two sets thereby established should be seen in theory and dealt with in practice in a differentiated manner