Müller linked classical metaphysics with phenomenology of Husserl and the existentialism of Heidegger. He developed from it a theory of “metahistory” as a philosophy of historical liberty. For Müller, the sense of history is distinctive in each epoch. The "transcendental experience" of humans is created in personal engagement through communal achievement in the world as work. Politics, religion, art and science, along with the personal relationships between people, carry material and symbolic means to attempt answers and achieve effective representations.
