1911 Encyclopædia Britannica, Volume 13… (1911)
“ His military insubordination appears to have been forgiven and forgotten, for in Berlin King Frederick William IV. had him introduced to him and used the memorable words: “ich liebe eine gesinnungsvolle Opposition” (“I admire an opposition, when dictated by principle.”) Herwegh next returned to Paris, where he published in 1844 the second volume of his Gedichte eines Lebendigen, which, like the first volume, was confiscated by the German police. At the head of a revolutionary column of German working men, recruited in Paris, Herwegh took an active part in the South German rising in 1848 ”
