2.
The Discourse on Answering Questions
42.
"There are, monks, these four ways of answering questions.
What are the four?
There is, monks, a question to be answered definitively;
there is, monks, a question to be answered analytically;
there is, monks, a question to be answered with a counter-question;
there is, monks, a question to be set aside.
These, monks, are the four ways of answering questions."
The third one should answer with a counter-question, but the fourth one should set aside.
Skilled in the four questions, they call such a monk.
And he is proficient in both what is beneficial and what is harmful.
By attaining what is beneficial, that intelligent one is said to be a person of wisdom. The second.