Tao Te Ching Chapter 40: Dispensing with Use

The shortest chapter in the Tao Te Ching — two sentences that many consider the hinge of the whole book. Reversal is the movement of the Tao; yielding and weakness are its application. Everything the other eighty chapters illustrate is compressed here: the Way moves by returning, not by advancing — whatever extends comes back, whatever peaks declines, whatever departs turns home. To work with such a universe, force is the wrong tool; the effective 'application' is softness, the yielding that cooperates with the return instead of fighting it.

The second sentence grounds the physics in metaphysics: all things in the world arise from being, and being arises from non-being. Behind every something stands the fertile nothing the earlier chapters kept honouring — the empty hub, the hollow vessel, the valley. Read together, the two sentences give the practitioner one complete instruction: expect reversal, so hold positions lightly; and trust emptiness, since even existence itself was born from it. Few texts have said more with twenty-one Chinese characters.