We cling to our own point of view, as though everything depended on it. Yet our opinions have no permanence; like autumn and winter, they gradually pass away.

Using a point to show that a point is not a point is not as good as using a nonpoint to show that a point is not a point.

To let understanding stop at what cannot be understood is a high attainment. Those who cannot do it will be destroyed on the lathe of heaven.

There is order in chaos, and certainty in doubt. The wise are guided by this order and certainty.