sentences:  On 3 December 1922, Eisler went to Hamburg to give a paper titled “"Orphische und altchristliche Kultsymbolik"” (“Orphic and Early Christian Cult Symbolism”) at the Bibliothek Warburg and received spontaneous applause at the end of his lecture.Warburg himself was taking a leave of absence, having suffered a nervous breakdown in 1918.It was Saxl, Warburg’s secretary who had read "Orpheus the Fisher" and invited Eisler.