By Meredith Hindley | HUMANITIES , July/August 2012 | Volume 33, Number 4 + Click on image to enlarge. An 1889 oil sketch of Friedrich Nietzsche on his sick bed by Hans Johann Wilhelm Olde. Goethe-Nationalmuseum, Stiftung Weimarer Klassik und Kunstsammlungen, Weimar, Germany / Art Resource, NY +…