After you have driven the nail home make your get-away.
Many a solicitor has lost his prestige because, after having
accomplished his point, he hung on.
It is quite an art to know when to make the get-away. Study your
customer carefully, and when you have made your point clear and your
proposition is presented to him in the best possible manner, then get
away.
The bore is a bore because he does not know how to get away. The
solicitor is always welcome if it is known he is not a hanger-on, and
that he gets in and gets out quickly.