Ernst Haeckel, The Riddle of the Universe (Die Welträthsel or Die Weltraetsel, 1895–1899), Publisher: Prometheus Books, Buffalo, NY, 1992, reprint..
REDIRECT Philosophy of Friedrich Nietzsche
Http://www.nietzschesource.org/ Nietzsche Source: Digital version of the German critical edition of the complete works / Digital facsimile edition of th..
Http://www.klassik-stiftung.de/index.php?id=344 Nietzsche Archive http://www.klassik-stiftung.de/index.php?id=456 Friedrich Nietzsche College
Nietzsche-Haus, Naumburg