He left Germany after the Nazis came to power, living in several different European countries and eventually emigrating penniless to the United States in 1939.
He became the editor of Aufbau, a periodical published in German, and transformed it from a small monthly newsletter into an important weekly newspaper, especially during World War II and the postwar era, when it became an important source of information for Jews trying to establish new lives and for Nazi concentration camp survivors to find each other.
After a serious injury during World War I, he was discharged from military service and continued his studies, graduating in 1917 with a doctorate in law.
At one point during the conflicts over the Upper Silesia plebiscite, George was put before a firing squad by a Freikorps soldier, but was able to provide a certificate of military service and was released.
In 1924, along with Carl von Ossietzky, George was one of the founders of the leftist "Republikanische Partei Deutschlands" ('Republican Party of Germany').
In Prague, he was the publisher of an emigrant newspaper called the Prager Montagsblatt and was one of the founding members of the Jewish Revue.
After the Munich Agreement, George continued to live in exile first in Hungary, then Yugoslavia, Italy, Switzerland and France, finally settling in the United States.
[3] With an income of less than $4.00 a week, George started work in New York as editor of Aufbau and turned it into an important journalistic voice for the Jewish exile community in the post-World War II era, leading him to be called "a central figure in Jewish journalism of the Hitler and post-Hitler period.
After his death on December 30, 1965 The New York Times wrote in his obituary: George married Jeanette (née Simon), a social worker, in 1920.