often to the day. He explained: "I want to leave to posterity a documentation that will be as complete as possible. That's why I put a date on everything I do." Artistic legacy Picasso's influence was and remains immense and widely acknowledged by his admirers and detractors alike. On the occasion of his 1939 retrospective at MoMA, Life magazine wrote: "During the 25 years he has dominated modern European art, his enemies say he has been a corrupting influence. With equal violence, his friends say he is the greatest artist alive." Picasso was the first artist to receive a special honour exhibition at the Grand Gallery of the Louvre Museum in Paris in celebration of his 90 years. In 1998, Robert Hughes wrote of him: "To say that Pablo Picasso dominated Western art in the 20th century is, by now, the merest commonplace. ... No painter or sculptor, not even Michelangelo, had been as famous as this in his own lifetime. ... Though Marcel Duchamp, that cunning old fox of conceptual irony, has certainly had more influence on nominally vanguard art over the past 30 years than Picasso, the Spaniard was the last great beneficiary of the belief that the language of painting and sculpture really mattered to people other than their devotees." At the time of Picasso's death many of his paintings were in his possession, as he had kept off the art market what he did not need to sell. In addition, Picasso had a considerable collection of the work of other famous artists, some his contemporaries, such as Henri Matisse, with whom he had exchanged works. Since Picasso left no will, his death duties (estate tax) to the French state were paid in the form of his works and others from his collection. These works form the core of the immense and representative collection of the Musée Picasso in Paris. In 2003, relatives of Picasso inaugurated a museum dedicated to him in his birthplace, Málaga, Spain, the Museo Picasso Málaga. The Museu Picasso in Barcelona features many of his early works, created while he was living in Spain, including many rarely seen works which reveal his firm grounding in classical techniques. The museum also holds many precise and detailed figure studies done in his youth under his father's tutelage, as well as the extensive collection of Jaime Sabartés, his close friend and personal secretary. Guernica was on