Nietzsche knew little of the 19th-century philosopher Søren Kierkegaard.Angier, Tom P. Either Kierkegaard/or Nietzsche: Moral Philosophy in a New Key. I..
According to Santayana, Nietzsche considered his philosophy to be a correction of Schopenhauer’s philosophy. In his http://archive.org/details/cu3192408..
Babich, Babette E. (1994) Nietzsche's Philosophy of Science, Albany: State University of New York Press. Breitschmid, Markus, Der bauende Geist. Fried..