And yet, and yet … Negar la sucesión temporal, negar el yo, negar el universo astronómico, son desesperaciones aparentes y consuelos secretos. Nuestr… - Jorge Luis Borges

It is clear that there is no classification of the Universe that is not arbitrary and full of conjectures. The reason for this is very simple: we do not know what kind of thing the universe is.

I can give you my loneliness, my darkness, the hunger of my heart, I am trying to bribe you with uncertainty, with danger, with defeat.

These ambiguities, redundances, and deficiences recall those attributed by Dr. Franz Kuhn to a certain Chinese encyclopedia entitled Celestial Emporium of Benevolent Knowledge. On those remote pages it is written that animals are divided into (a) those that belong to the Emperor, (b) embalmed ones, (c) those that are trained, (d) suckling pigs, (e) mermaids, (f) fabulous ones, (g) stray dogs, (h) those that are included in this classification, (i) those that tremble as if they were mad, (j) innumerable ones, (k) those drawn with a very fine camel's hair brush, (l) others, (m) those that have just broken a flower vase, (n) those that resemble flies from a distance.