It's time to celebrate the courage of the genuinely adversarial, those who challenge both cultural certainties and the wilful infliction of adversity across the world.
But much of "Aztlán Today" stands at a conflicted remove from cultural certainties, as seen in Mr. Martínez's memorable photodiptychs.
It's a motto that encapsulates the search through unmarked musical territories on which Nono's late music embarks – and symbolises how far he and his music had come from any sense of artistic or cultural certainties.
It's far easier to attack "them" than examine the deceit, delusions and cultural certainties that constitute "us" – whether by acknowledging the depredations of the British empire or exposing its legacy of structural racism.
The young – those under 35, let's say – have embraced the virtues of a tolerant, easy-going, multicultural society; many of those over 65, especially in the big cities, feel dispossessed, their old cultural certainties shattered; those in between – me and Paxman aside, perhaps – are just about swimming with the tide, or at least keeping our thoughts to ourselves.
But the artistic response to a world in which there is so much confusion, division and threat to people on a global scale, and where we can see that unfolding in real time – and with a sense that this will be how it is for the next century – is very different from the heroic task of rebuilding Europe after the war and the broad cultural certainties that made that possible.
Psychological distance is a construct that measures the "distance" of an event or object in terms of geography, time, cultural similarity and factual certainty.
"We embrace a spirit of adventure," she writes," along with the richness of our family's cultural diversity and absolute certainty of our underlying love for each other".
I feel I'm writing at a time when old certainties – political, cultural, economic – are crumbling and we are not really sure what is coming on the horizon".
But – and it's a big, fat, hairy but – we must accept that those diagnostic categories are cultural constructions, not global certainties.
