Answer: It tells us that he does not adhere to his own philosophy.
Explanation:
This is an excerpt from Hamlet, Shakespeare's famous play about Hamlet's attempt to revenge his father's death.
The line is uttered by Polonius, a chief counsellor of the king, and the father of Laertes and Ophelia.
In Act II, Scene II, Polonius tells the King and Queen that he knows something they don't, but procrastinates in telling them the piece of information they are waiting to hear. He reminds them that he has always been loyal to them, and pauses so that the messenger can deliver his message, only to start all over again.
The Queen loses patience and reminds him to stick to the point: "More matter, with less art." This tells us that Polonius does not adhere to the philosophy he presented in this line - "Brevity is the soul of wit." Polonius claims that the wisdom is demonstrated by not talking too much, which is ironic, as he cannot stop talking.
