Returning to Munich in 1904, he became part of the circle of students around Lipps, which included Alexander Pfänder, Adolf Reinach, Theodor Conrad, Aloys Fischer, Max Scheler, and Dietrich von Hildebrand.
In 1906, Geiger attended Husserl's lectures in Göttingen, and became part of the Munich Circle of phenomenology, along with Reinach, Conrad, Fischer and Pfänder.
Along with this Husserlian circle (including Max Scheler), he published the review Jahrbuch für Philosophie und phänomenologische Forschung.
When the Nazis had him dismissed from his chair because of his Jewish ancestry in 1933,[1] he emigrated to the United States, teaching at Vassar College in New York and at Stanford University.
Moritz Geiger was the sustainer of a sui generis phenomenological method of “pure self-given factuality”, without limitation by sensual-visible or idealistic prejudices, without basing the reality on a lower, not-given sphere.