Thus, our minds have an orientation of transcendence. It is not that there is some particular “thing” out there towards which our minds are ultimately moving. Rather, This is the Proposition Rahner proposes: “If it can be, our minds can be moving towards it” (my way of putting Rahner). Now, the ultimate “it” towards which our minds are moving cannot therefore be placed under any category. It is not such a thing that we can have determinate consciousness about it.
Being as such, then, is not any particular thing. Therefore, we cannot properly speaking have a concept about it. Rather, we recognize it by way of recognizing the dynamic impulse of our minds. An analogy would be “infinity”. No one has a concept of an infinite number, for every “number” can be reached by counting, but what is “without end” (infinite) cannot be reached. Therefore, there is no such thing as “infinite number”. Nor is there such a thing as the asymptotically approaching curve actually contacting the straight line. They will never contact, however far you go. But the mathematician grasps that you can define “limit” in terms of a process of construction on the geometrical grid.