Directions: Read the given statements and answer the question that follows: A. Fools ask questions that wise men cannot answer. B. It is easy to be wise after the event. C. Where ignorance is bliss, it is folly to be wise. D. Wise men talk because they have something to say, fools talk because they have to say something.

Which saying expresses that we should modify our behaviour according to the people we are interacting with?