Do not answer one whose questions are coarse; do not ask one
whose answers are coarse.[2]
Do not enter into discussion with one
of argumentative disposition. It is necessary that a person come
following the True Way, and only then should he be engaged [in
conversation]. Unless his is the True Way, he should be avoided.
Thus only with one who is courteous and respectful can one discuss
the methods of the Way; only with one whose words are complaisant
can one discuss the principles of the Way; only with one
whose demeanor is docile can one discuss the Way in its entirety.
Hence one who speaks with a person that should not be spoken
with should be called blind, and one who does not speak with a
person that might properly be spoken with should be called secretive.[3]
The superior man is not blind, but in speaking is careful
about the kind [of man he addresses]. The Ode says,[4]
There is no remissness in their demeanor;—
Of such should the Son of Heaven approve.
It says that first they must accord with my intention before I
approve of them.