Wilhelm Dilthey
Bollnow developed the work of Wilhelm Dilthey on hermeneutics and was concerned with the philosophical foundations of pedagogy. He also concerned himself with the foundations of philosophy and with phenomenology and existential philosophy. Martin Heidegger charged Bollnow with "having launched [...] the starkest misinterpretation of "Being and Time"" ("die gröbste Mißdeutung von "Sein und Zeit" [...] auf die Bahn gebracht").