Pablo Picasso was a Spanish painter and sculptor who lived from 1881-1973. He is considered one of the most influential artists of the 20th century. The document provides biographical details about Picasso's early life and artistic development. It notes that from a very young age, Picasso was drawn to art and spent hours drawing. The document also summarizes Picasso's artistic periods from 1900-1914, the time when he was developing his unique style, including his Steinlenian, Stained Glass, Blue, Circus, Rose, and early Cubist periods. It analyzes how Picasso's art evolved through these periods as a reflection of his inner psychological growth and development as an artist.