Nietzcshe
Nietzsche's influence remains substantial within and beyond philosophy, notably in existentialism, nihilism and postmodernism. His style and radical questioning of the value and objectivity of truth have resulted in much commentary and interpretation, mostly in the continental tradition. His key ideas include the death of God, the Übermensch, the eternal recurrence, the Apollonian and Dionysian dichotomy, perspectivism and the will to power. Central to his philosophy is the idea of "life-affirmation", which involves an honest questioning of all doctrines that drain life's expansive energies, however socially prevalent and radical those views might be.[37]
Nietzsche began his career as a classical philologist before turning to philosophy. In 1869, at the age of 24 he was appointed to the Chair of Classical Philology at the University of Basel (the youngest individual to have held this position), but resigned in the summer of 1879 due to health problems that plagued him most of his life.[38] In 1889 he suffered a collapse and a complete loss of his mental faculties, the breakdown has been ascribed to atypical general paralysis attributed to tertiary syphilis, but this diagnosis has since come into question.[39] He lived his remaining years in the care of his mother until her death in 1897, then under the care of his sister until his death in 1900.
His sister Elisabeth Förster-Nietzsche, acted as curator and editor of Nietzsche's manuscripts during his illness. She was married to a prominent German nationalist and antisemite, Bernhard Förster and she reworked many of Nietzsche's works to fit her husband's ideology,