The Symbolists, and Pablo Picasso during his blue period, drew on the cold tonality of El Greco, utilizing the anatomy of his ascetic figures. While Picasso was working on "Les Demoiselles d'Avignon", he visited his friend Ignacio Zuloaga in his studio in Paris and studied El Greco's "Opening of the Fifth Seal" (owned by Zuloaga since 1897). The relation between "Les Demoiselles d'Avignon" and the "Opening of the Fifth Seal" was pinpointed in the early 1980s, when the stylistic similarities and the relationship between the motifs of both works were analysed. According to art historian John Richardson "Les Demoiselles d'Avignon" "turns out to have a few more answers to give once we realize that the painting owes at least as much to El Greco as Cézanne". Picasso said about "Demoiselles d'Avignon", "in any case, only the execution counts. From this point of view, it is correct to say that Cubism has a Spanish origin and that I invented Cubism. We must look for the Spanish influence in Cézanne. Things themselves necessitate it, the influence of El Greco, a Venetian painter, on him. But his structure is Cubist".