There is a persistent myth that by their very nature humans are selfish, aggressive and quick to panic. It’s what Dutch biologist Frans de Waal likes to call veneer theory: the notion that civilisation is nothing more than a thin veneer that will crack at the merest provocation.4 In actuality, the opposite is true. It’s when crisis hits – when the bombs fall or the floodwaters rise – that we humans become our best selves.