I believe in X

I believe the universe must be the work of a transcendent creator. Otherwise, nothing should ever have been. The existence of this world is not rational, meaning it could not have brought itself into being ex nihilo. The conventional English expression would be "I believe in God." I don't, however, find the conventional expression satisfying because of the connotations attached to "God with a capital g." Perhaps I will point toward the creator with the symbol X (pronounced "capital x") to convey both the power and the mystery of this... whatever it is.