Transformations to sustainability for addressing climate change are now more urgent than ever. This paper argues that such transformations are firstly required in modernist practices that militate against sustainability due to their constitution by the fallacy of human control. The latter points to the conceit of suppressing uncertainties in knowledge, commandeering agency from above', standardising governance, harming marginalised ecologies and disqualifying practices inferiorised as primitive', irrational' or vernacular'. Undoing the fallacy of control,by admitting uncertainties,modernist practices may become caring through transformative engagement with others. I propose four aspects of such transformative engagement: (a) egalitarian commitment to distributing epistemological privilege; (b) ontological sensitivity, by taking seriously the relational bases of others' knowing; (c) learning for divergence from others; and (d) affinity in alterity across widening divergence. These aspects are proposed not as fully formed principles, but rather as questions to be reworked in ongoing encounters and struggles for sustainability and climate justice. The aim is to nurture other-than-modern understandings of climate challenges and to help build multiple coexisting pathways of resilience, adaptation and mitigation.