In a recent scholarly debate, the Anthropocene concept has been criticized for diverting attention from the political aspects of contemporary environmental crises, not least by way of the long timescales it implies. This article therefore takes on the matter of long-termism as an historical and political phenomenon, by applying a conceptual historical perspective. Examples are drawn from historical studies of forest politics. It is argued that conceptions of the long term, as in all concepts in political language, are historical and therefore problematic to legitimately define conclusively. However, many of the environmental crises looming in our time do indeed call for long-term perspectives. As a solution in accordance with its historical and democratic conceptual character, it is suggested that political long-termism paradoxically can and should be constantly deliberated upon and renewed in the short term. Its conceptual history can then serve two purposes: First, history can offer exempla of how long-termism can be conceptualized and institutionalized in ways that encourage continuous deliberation and reconceptualization. Second, historical conceptualizations of the long term can be drawn upon, both negatively and positively, in this continuous deliberation.