James Walter Ferrier and John George Robertson, 1911 Encyclopædia Britannica, Volume 13… (1911)
“ In the case of no other of the greater German poets is it so hard to arrive at a final judgment as in that of Heinrich Heine. In his Buch der Lieder he unquestionably struck a new lyric note, not merely for Germany but for Europe. No singer before him had been so daring in the use of nature-symbolism as he, none had given such concrete and plastic expression to the spiritual forces of heart and soul; in this respect Heine was clearly the descendant of the Hebrew poets of the Old Testament. ”
