Cubism co-founder Pablo Picasso (1881 – 1973) produced many bold and daring pieces as well as economical, eloquent line drawings such as “Dance of Youth.” His gentle renderings of children, animals, flowers and butterflies convey a poignant innocence and simplicity. A child prodigy, Picasso became one of the 20th century’s most influential and prolific artists with a catalog of more than 20,000 pieces.