In a case study, I applied philosophical hermeneutic principles in an advanced level EFL writing class in Taiwan. A "fusion of horizons" occurs at the junction of two intertwined interpretations: one from our socio-historical tradition and the other from our experience of novel phenomena. I explored students' hermeneutic horizons in relation to Nietzsche's text "Will and Wave." Data collection was through classroom observations, informant interviews, and an analysis of three students' interpretive essays. The results indicated that students experienced particular difficulties comprehending metaphors and the author's purpose. Comprehension was a painstaking effort for most students because of their perceived ambiguity of Nietzsche's message. Nevertheless, the text evoked personal stories and new perspectives for some students.