I felt and now feel the more strongly this formula is of the logical type, non-dualism. As you know, I cannot manipulate Cartesian mathematics well enough to be able to show that the quadrant system is a non-dualistic syntax, but the tendency of this line of thought would be to induce just such an effort. The epigram is a mahavalkya and he must have known that it is. One does not want to claim too much in cases such as these, but the genre always raises the question of whether what we have all-along assumed is one thing might also be another. Realism and Nominalism are not exclusive views.
Individuals favor one or the other but employ both.
The epistemological typologies represented by these views are primal, not culture-specific.