One name in the history of the 20th century art stands out over all others: Pablo Picasso (1881-1973). As painter, graphic artist and sculptor, he displayed an inventive enterprise and innovative bravado that always kept him one step ahead of his contemporaries. As one of them, the painter Max Ernst, ruefully put it: "No one can touch Picasso. He is genius incarnate." The works selected here cover Picasso's entire output, from the less familiar to key masterpieces such as "Guernica", from the Blue and Rose Periods early in his career through his cubist and classicist phases and the formal experiments of the Thirties to his later involvement with politics in art.