That, that is, is.
That, that is not, is not.
That, that is, is not that, that is not.
That, that is not, is not that, that is.
The eye is a menace to clear sight, the ear is a menace to subtle hearing,
the mind is a menace to wisdom, every organ of the senses is a menace to its
own capacity. ... Fuss, the god of the Southern Ocean, and Fret, the god
of the Northern Ocean, happened once to meet in the realm of Chaos, the god
of the center. Chaos treated them very handsomely and they discussed together
what they could do to repay his kindness. They had noticed that, whereas
everyone else had seven apertures, for sight, hearing, eating, breathing and
so on, Chaos had none. So they decided to make the experiment of boring holes
in him. Every day they bored a hole, and on the seventh day, Chaos died.
-- Chuang Tzu