We share one planet that establishes the foundations of our lives in all its facets and diversity. There is substantial evidence that we are approaching several crucial boundaries of this planet, beyond which humanity runs the risk to leave a safe and just operating space. Examples of related challenges are climate change, biodiversity loss or social tensions fuelled by the in-just distribution of wealth and resources.  Facing these challenges, the world community has agreed upon 17 Sustainable Development Goals as part of the Agenda 2030 as shared guideline for policy making and action on all levels.  For reaching these goals different form of sharing can and should play an essential role ranging from sharing of resources and products to sharing of ideals, experiences and knowledge both on a local and on a global level. Thus, the question is how we can and want to share for a common future rather than if we want to share or not.