 Complete the following phrase:  Alberto Burri was born on 12 March 1915 born to Pietro Burri, a tuscan wine merchant and Carolina Torreggiani, an umbrian elementary school teacher. Between 1934 and 1939, he attended at the University of Perugia, after graduating from the Annibale Mariotti high school, he enrolled in the faculty of medicine at the University of the same city, graduating on 12 June 1940 with a doctor degree, and was a military doctor for four years in World War II. He claimed he studied art history, because he wanted to be able to understand the works of art that surrounded him. He also studied Greek, a language in which he became proficient and later in life was able to read and enjoy Classical Greek literature. While studying medicine, he specialized in tropical medicine and decided to work in Africa. With an precocious voluntary experience in the 