A century has passed since the term ‘modernism’ became current, and the argument about ‘postmodernism’ is now four decades old. What did these categories of art and culture mean then, and how do they signify today? Has modernism become ‘our antiquity’ as some have claimed, or has a global perspective renewed it as a framework for contemporary art and criticism? Is postmodernism a ‘thing of the past’, or might it too possess an unexpected afterlife? We will take up such questions with some of the crucial actors’ artists, critics, historians, museum directors and curators in these debates.