This aphorism means that “injuries” (which can be related to problems, disagreements, a harmful or painful situation) can be easily disappear just as dust do with a simple puff of air). On the other hand, the benefits you get by experiencing a conflict or a worrying situation will last for ever in the same way a craftsman caves into marble. All in all, people should look at the good side of things rather than the negative ones.
An author is likely to introduce a conflicting viewpoint by stating some proven statistics in its favor. Locating facts and figures in a text are likely to take the reader directly to a conflicting viewpoint.
