Eugène Delacroix. The Death of Sardanapalus 1827 (detail). Oil on canvas, cm. 395 x 425. Louvre Museum, Paris

National Gallery, London Till 22 may 2016 "We all paint in Delacroix's language" (Paul Cézanne) Eugène Delacroix, irreducible rebel, enigmatic and extravagant. Few artists have had over him...