Hyperbole engaged in consciously to achieve a desired effect can be, as we have noted, a useful rhetorical tool. Indeed, its use in this manner is sometimes called "exaggeration in the service of truth." However, there's much to be said for restraint of tongue and pen, and restraint refers not only to what we say but also to how we say it. It is possible, believe it or not, to be emphatic without indulging in overstatement; it is possible to be forceful without exaggerating.