Seng-Ts'an (d.606)

Do not remain in the dualistic state;
avoid such pursuits carefully.
If there is even a trace
of this and that, of right and wrong,
the Mind-essence will be lost in confusion.
Although all dualities come from the One,
do not be attached even to this One.
When the mind exists undisturbed in the Way,
nothing in the world can offend,
and when a thing can no longer offend,
it ceases to exist in the old way.

When no discriminating thoughts arise,
the old mind ceases to exist.
When thought objects vanish,
the thinking-subject vanishes.
Things are objects because of the subject;
the mind is such because of things.
Understand the relativity of these two
and the basic reality: the unity of emptiness.
In this Emptiness the two are indistinguishable
and each contains in itself the whole world.
If you do not discriminate between coarse and fine
you will not be tempted to prejudice and opinion.