Action at scale on climate change is urgent. It is unavoidable that such action must for a period of some decades include restraint, because we do not have time to construct enough emissions-free substitutes for all today’s emitting activities. Leaders in politics and businesses cannot promote restraint without losing their jobs, so leadership must come from us, individually and collectively, making decisions to live differently. We can all act, at home and at work or in other teams. We can prioritise our most emitting activities, make changes where possible and, where it is for now beyond our reach, we can promote change through raising awareness of what matters and what help we need. These choices and actions are virtuous. Not ‘virtuous’ in the sense we parodied in the opening, of something admirable but prim and outdated, but a joyful, life-enhancing virtue that expresses the best of what we hope to be. The virtue of restraint in climate action is an act of leadership, an expression of faith and charity, and above all, an act of love.