Read the aphorism. Write injuries in dust, benefits in marble. What important idea does this aphorism from Benjamin Franklin's Poor Richard's Almanack convey?

Answer:

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.