]; ▁and , ▁finally , ▁the ▁inv ocation ▁of ▁the ▁da em onic . ▁ ▁N iet z sche ▁The ▁traject ory ▁of ▁Le verk ü hn ' s ▁career ▁is ▁mode led ▁partly ▁upon ▁the ▁life ▁of ▁Friedrich ▁N iet z sche ▁( 1 8 4 4 – 1 9 0 0 ). ▁From ▁his ▁supposed ▁contra ction ▁of ▁sy ph ilis ▁to ▁his ▁complete ▁mental ▁collapse ▁in ▁ 1 8 8 9 ▁proc laim ing ▁the ▁Anti - Christ , ▁and ▁his ▁death ▁in ▁ 1 9 0 0 , ▁N iet z sche ' s ▁life ▁presents ▁a ▁celebrated ▁example ▁im itated ▁in ▁Le verk ü hn . ▁( The ▁ill ness es ▁of ▁Del ius ▁and ▁Wolf ▁also ▁reson ate , ▁as ▁does ▁the ▁death ▁of ▁Mah ler ' s ▁child ▁after ▁he ▁had ▁tempt ed ▁fate ▁( as ▁Al ma ▁Mah ler ▁thought ) ▁by ▁setting ▁the ▁Kind ert oten lieder .) ▁N iet z sche ' s ▁ 1 8 7 1 ▁work ▁The ▁B irth ▁of ▁T rag edy ▁from ▁the ▁Spirit ▁of ▁Music , ▁presents ▁the ▁theme ▁that ▁the ▁evolution ▁of ▁Art ▁is ▁bound ▁up ▁with ▁the ▁du ality ▁of ▁the ▁Ap oll onian ▁and ▁D ion ys ian ▁H ellen ic ▁imp uls es , ▁which ▁the ▁novel ▁ill umin ates . ▁Perhaps ▁the ▁' ser ene ' ▁Zeit bl om ▁and ▁the ▁trag ical ▁Le ver ku hn ▁person ify ▁such ▁a ▁du ality ▁between ▁imp uls es ▁towards ▁reason ed , ▁cont