 By 1926 Anderson had become dispirited by the rejection for publication of a textbook on logic that he had been working on since 1922. He had also become politically isolated in the department because of his support for the General Strike in Britain. Such factors may have moved him to accept the Challis Chair of Philosophy at the University of Sydney, although as with his brother, the movement of Scottish philosophers to Commonwealth universities was not unusual. In 1927 he moved with Jennie and their young son Alexander (“Sandy”) to Sydney.