Abstract

I interpret Adorno's bold claim that all philosophy revolves around the ontological argument. On my reading, Adorno thereby expresses that all philosophy revolves around the question whether all of reality can be captured by thought. I then interpret the significance of this thesis for Adorno's *Negative Dialectics*. I argue that Adorno does not give up the ontological argument's claim—capturing reality in thought—but gives it a Marxist spin: whether reality can be captured in thought depends on its historical development, and is therefore also up to humans and their actions.