The 10th T.M.C. Asser Annual Lecture will be held by Spinoza Prize winner Joyeeta Gupta. She will be speaking on ‘Protecting the public interest in times of climate change: from abandoning fossil fuel to sharing our Earth.’ She will discuss the need for abandoning fossil fuel, why it’s not happening, and how this can be countered by social movements and independent courts providing access to climate justice. She then discusses the bigger picture of crossed planetary boundaries. Research into ‘just boundaries’ shows we must accelerate multilateralism, not retreat into nationalist rights to pollute. When resources are scarce, three rational actor responses often emerge: neo-liberal capitalist, hegemonic state-centered, and polycentric approaches. However, only a social practice model building on multilateral goals and principles, institutionalised in a possible global Constitution, could help us address our dire situation. Though seemingly impossible today, in five years, the world may call for such a dream.