Weber therefore spent most of his formative academic years in his childhood home, where he was continually subject to his parents’ conflicting interests. Since he spent his mid- and late 20s working simultaneously in two unpaid apprenticeships—as a lawyer’s assistant and as a university assistant—he could not afford to live on his own until the autumn of 1893. At that time he received a temporary position teaching jurisprudence at the University of Berlin and married Marianne Schnitger, a second cousin.
After his marriage Weber followed a compulsive work regimen that he had begun after his return to Berlin in 1884. Only through such disciplined labour, believed Weber, could he stave off a natural tendency to self-indulgence and laziness, which could lead to an emotional and spiritual crisis.
Weber’s great capacity for disciplined intellectual effort, together with his unquestionable brilliance, led to his meteoric professional advance. One year after his appointment at Berlin, he became a full professor in political economy at Freiburg, and the following year (1896) he attained that position at Heidelberg. Following his doctoral and postdoctoral theses on the agrarian history of ancient Rome and the evolution of medieval trading societies, respectively, Weber wrote a comprehensive analysis of the agrarian problems of eastern Germany for one of the country’s most important academic societies, the Union for Social Policy (1890). He also wrote important essays on the German stock exchange and the social decline of Latin antiquity. He was politically active in these years, working with the left-liberal Protestant Social Union.