Aub was born in Paris to a
French-Jewish mother and
German father, who was a travelling salesman. At the outbreak of
World War I, his father was in Spain on business and could not return to France, as he had become an enemy alien. Max and his mother joined him there and they all took Spanish citizenship. In 1914 Aub and his family settled in
Valencia. There he completed his secondary education. In 1920, Aub became a salesman, like his father and from 1920 to 1935 he traveled through Spain and other European countries selling a variety of different products. In 1921, he became a Spanish citizen. His work,
Geografía, was first published in
Revista de Occidente in 1927.{{cite book|author=Jessica Berman|title=Modernist Commitments. Ethics, Politics, and Transnational Modernism|year=2012|publisher=
Columbia University Press|location=New York; Chichester, West Sussex ==Spanish Civil War==