He became professor extraordinarius of oriental languages in the faculty of philology at Halle, was elected professor ordinarius at Marburg in 1885 and was transferred to Göttingen in 1892, where he stayed until his death.
A devenit profesor extraordinarius de limbi orientale la facultatea de filologie din Halle, a fost ales profesor ordinarius la Marburg în 1885 și a fost transferat la Göttingen în 1892, unde a rămas până la moartea sa.