The environment must be integral to all policy, and posterity must be party to every decision. A social democratic programme must be universal, not particular. Social democratic parties should resist the temptation to represent particular classes or interests or to build coalitions of minorities. Don't believe the myths assiduosly peddled by opponents that prosperity or affluence have resolved the conflicts or eliminated the problems which brought socialism into being in the first place. Economic growth is a necessary but not sufficient condition of progress.
Ecological constraints demand new ways of defining and measuring wealth.
But no amount of growth, sustainable or otherwise, will eliminate all conflicts. More wealth will not end poverty, injustice or the abuse of power, although it can help. But there are many kinds of market, and socialism have to decide what kind they want. The Left must be committed to the creation of wealth, albeit in sustainable ways, not just to its distribution. The Left must offer an alternative in which responsability, skills, ownership and power at work are taken by workers, in the interests of profitability as well as opportunity.