But now I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth.
— Umberto Eco
The world is a play of phenomena, an enigmatic play of appearances beneath which there is no reality. Harmless in itself, the world is made terrible by us when we make the mad attempt to lay bare an underlying truth it fails to possess. Part of Eco's thought, I take it, is that those who seek the world's underlying truth fool themselves into thinking that they have found it, and having convinced themselves that they are now in possession of it, feel entitled and perhaps even obligated to impose it on others for their own good. But these others, naturally, resist the imposition and react violently. Hence the pursuit of the truth leads to contention and bloodshed. Better to live and let live and admit that there is a variety of perspectives, a diversity of interpretations, but no God's Eye perspective and no final interpretation, let alone an uninterpreted reality in itself, a true world hidden by the world of appearances. The world is interpretation all the way down. Being has no bottom.
The line of thought is seductive but incoherent. If the world is an enigma, then it is true that it is an enigma. If it is harmless, then it is true that it harmless. If it is made terrible by our attempt to interpret it, then it is true that it is made terrible by our attempt to interpret it. If our attempt is mad, then it is true that our attempt is mad. And if it has no underlying truth, then it is true that it has no underlying truth.
If that is the truth, then there is after all an underlying truth and the world cannot be a play of relativities, of shifting perspectives, of mere interpretations. If the world is such-and-such, then it is, and doesn't merely seem.