Von Herrmann’s , translated here from the original German, represents the most fundamental and critical reflection in any language of the concept of phenomenology as it was used by Heidegger and by Husserl. It provides a careful rendition of Husserl’s essential contribution to phenomenology, then draws a clear demarcation between Husserl’s reflective phenomenology and Heidegger’s hermeneutic phenomenology. While showing the fullest respect for Husserl’s phenomenology, offers a full-fledged critique of Husserl from the perspective of Heidegger’s hermeneutic phenomenology.