2.1 When the people of the world all know beauty as beauty, there arises the recognition of ugliness.
2.2 When they all know the good as good, there arises the recognition of bad.
2.3 Therefore being and non-being produce each other; difficult and easy complete each other; long and short contrast each other;
2.4 high and low distinguish each other; sound and voice harmonize with each other; beginning and end follow each other.
2.5 Therefore the wise manage affairs without interfering and teach beyond the words.
2.6 All things rise, and they do not turn away from them. They give them life, but do not take possession of them. They act, but do not rely on their own ability.
2.7 They accomplish, but claim no credit. Because they claim no credit, their accomplishment remains with them.
On we go, deeper and deeper, further and further into the miasmas of duplicity and dichotomy. The verse itself is dichotomous, providing examples of perceptual duality and then providing a hint at how to escape; namely, don't mess around with the reality you've created, basically it's a waste of time. 3, which Cleary calls Constant Pitfalls, exemplifies where we get if we go too deep. The Abyss on top of the Abyss, at the bottom of that is deep indeed!