“Thus, obscurative realities are said to be a kind of reality, but they are real only from the perspective of a state of mind that mistakenly grasps to things as real, whereas ultimate reality is real in the sense that nothing higher or more profound than emptiness—freedom from conceptual elaboration—will ever be found. Neither of the two realities is established through any characteristics of its own, but ultimate reality is the only reality that is invariant across all conceptual frameworks.”