Abraham "Aby" Moritz Warburg was born to a devoutly religious Jewish family of well-to-do German bankers. He attended the universities of Bonn and Munich and wrote his 1891 dissertation on Botticelli. Warburg moved to Berlin to study medicine and did his military service. His interest in psychology led him to anthropology, and in 1895 he toured the southwestern USA to observe Navajo and Pueblo traditions. In 1897 he married the artist Mary Hertz, with whom he had three children, and went to live in Florence. Warburg's library was launched as a research center, called the Warburg Institute, which officially opened in 1926. He died in 1929.