Religious frescoes, portraits of the Spanish high nobility and royal family, socially critical caricatures, a naked Maja, and depictions of horrific war atrocities - the work of Francisco José de Goya has many facets. This introduction explores the astonishing diversity of his themes and motifs through key works of his oeuvre and traces the influence he had on subsequent generations of artists - from Eugène Delacroix to the enfant terribles of Britart, the brothers Jake and Dinos Chapman. "The sleep of reason produces monsters." - Francisco de Goya.