 This too is that, that too is this. There they say “It’s this, it’s not” from one point of view, here we say “It’s this, it’s not” from another point of view. Are there really this and that? Or really no this and that? Where neither this nor that finds its opposite is called the axis of the Way. When once the axis is found at the center of the circle there is no limit to responding with either, on the one hand no limit to what is this, on the other no limit to what is not. Therefore I say, “The best means is illumination”. (Zhuangzi 2/29–31; tr. Graham 1989)