Upon entering his 80s, David Hockney sought out rustic tranquillity for the first time: a place to watch the sunset and the change of the seasons; a place to live a life of simple pleasures, undisturbed and undistracted; a place to keep the madness of the world at bay. So when Covid-19 and lockdown struck, it made little difference to life at La Grande Cour, the centuries-old Normandy farmhouse where Hockney set up a studio a year before, in time to paint the arrival of spring. In fact, he relished the enforced isolation as an opportunity for even greater devotion to his art. 'Spring Cannot Be Cancelled' is an uplifting manifesto that affirms art's capacity to divert and inspire. It is based on a wealth of new conversations and correspondence between Hockney and the art critic Martin Gayford, his long-time friend and collaborator.