Any big change of tempo is emphatic and will catch the attention. You may
scarcely be conscious that a passenger train is moving when it is flying over
the rails at ninety miles an hour, but if it slows down very suddenly to a
ten-mile gait your attention will be drawn to it very decidedly. You may forget
that you are listening to music as you dine, but let the orchestra either
increase or diminish its tempo in a very marked degree and your attention will
be arrested at once.
This same principle will procure emphasis in a speech. If you have a point that
you want to bring home to your audience forcefully, make a sudden and great
change of tempo, and they will be powerless to keep from paying attention to
that point. Recently the present writer saw a play in which these lines were
spoken:
"I don't want you to forget what I said. I want you to remember it the longest
day you--I don't care if you've got six guns." The part up to the dash was
delivered in a very slow tempo, the remainder was named out at lightning speed,
as the character who was spoken to drew a revolver. The effect was so emphatic
that the lines are remembered six months afterwards, while most of the play has
faded from memory. The student who has powers of observation will see this
principle applied by all our best actors in their efforts to get emphasis where
emphasis is due. But remember that the emotion in the matter must warrant the
intensity in the manner, or the effect will be ridiculous. Too many public
speakers are impressive over nothing.