Sapir–Whorf hypothesis

...the revival and universal teaching of the art of rhetoric to the point where it attains something akin to the kind of status it enjoyed in Ancient Rome. While it is not part of a code of conduct, rhetoric is closely related in that, in contrast to the likewise valuable art of written composition, rhetoric concerns how we present ourselves and engage others in public and, hence, encourages us to pay attention to our speech and body language and the way our words affect others. As with etiquette, I think we can all agree public speaking is in dire need of improvement, and for that reason, as well as its obvious practical benefits, I believe this would be a feasible measure people could easily get behind.