Adorno ranked sociology above all sciences for philosophy’s material.

Evidence

Adorno described sociology as being the science which was of greatest importance to philosophy. He emphasized that fundamental ontology was even more in contradiction with his view of the current tasks of philosophy than thinking which was merely scientistic'. A more exact definition of the relationship between philosophy and science, however, would show that philosophy should approach the results of the particular sciences with an exact form of imagination’, with a kind of imaginativeness which remains strictly within the material science offers it, but which transcends the sciences even in the minutest aspects of its arrangementaspects, admittedly, which necessarily originate in it. — Rolf Wiggershaus, The Frankfurt School, 380