Caravaggio: Blood, ecstasy and solitude. In Paris , an exceptional assemblage of artworks from the Old Masters genius

Picasso’s blue and rose-tinted worlds: this season’s most fascinating exhibition is now on show at the Musée d’Orsay

At the Centre Pompidou: the fascinating ugliness of FRANZ WEST’s art. Testimonies from David Zwirner to Robert Fleck

At the Morgan Library and published by Taschen: the collection that sums up the world in 100,000 manuscripts from Michelangelo to Warhol