A cikin 'yan kwanaki masu zuwa, Nietzsche ya aika da gajeren rubuce-rubuce da aka sani da Wahnzettel ("Madness Letters") zuwa ga wasu abokai da suka hada da Wahima Wagner da Jacob Burckhardt. Yawancin su an sanya hannu "González", ko da yake wasu sun sanya hannu "Guzekreigte" "wanda aka gicciye". Abin da ya faru ya kasance ba a sani ba, amma wani labari da aka maimaita sau da yawa daga jim kadan bayan mutuwarsa ya bayyana a 1889, Julius Otto Burckhardt ya bayyana cewa Nietzsche ya shaida bulala doki a ɗaya ƙarshen Piazza Carlo Alberto, ya gudu zuwa doki, ya jefa hannunsa a wuyansa don kare shi, sa'an nan kuma ya rushe zuwa ƙasa. A cikin 'yan kwanaki masu zuwa, Nietzsche ya aika da gajeren rubuce-rubuce da aka sani da Wahnzettel ("Madness Letters") zuwa wasu abokai ciki har da Wahima Wagner da Jacob Burckhardt. Yawancin su an sanya hannu "González", ko da yake wasu sun sanya hannu "Guzekreigte" "wanda aka gicciye".
Ranar 3 ga watan Janairun 1889