What the moralists tell – rather, what Rahner tells – us is that this “race” reveals something about our minds. It shows that our minds are oriented to “Being as such.” Whatever “is” falls under the scope of the vector of our mind’s possible reach. Therefore, our mind has an orientation to being. But where shall we find “being as such”? That is the question.
If I found “being as such” in one of the things that were, then being as such would just be this one thing. It would not be other things. But then these other things would not be. For instance, if “being as such” were just that Labrador with which we began, then you would not exist. For that Lab was “being as such”. Therefore, you have suddenly vanished. But why are you reading this now? How could you be, unless you existed. Therefore, the Labrador is not being as such.
Further, if each of the things that is does exist, none of the things that exist must be “being as such”.
But, you will ask Fr. Rahner, can’t they “all together” form “being as such”? No, they cannot. Why not? Take all things in the universe. Is there a unicorn there? Not yet. But hypothetically, there could be a unicorn. Conceivably, there could be one more child in my family. If these possible entities had no relation to being as such, they could not be. But they can be. Therefore, “being as such” cannot consist in “all” actual things. Rather, it is not something we can ever bump into. It is something we can grasp only by reflectively considering the very dynamism of our mind as a process towards the further understanding of what we have not yet understood.