In many situations, language can help create and communicate understanding. People can resolve differences through words instead of war. Words convey ideas, many of which can only be communicated through language. Through language people can give advice. Others, through language, can share their perspective on a situation, which may help what happened clearer to another.
Words can, and many times do, reveal truth.
People's minds become so biased from the lies that they are told that many times only the testimony of a witness can convince them of the real truth. It is then, when people fail at this, that they begin to have problems because we are not using language to the best of their ability. All languages are aesthetic and very beautiful. Just think of how beautiful poetry is. Take the opportunity to listen to people speaking in a language other than your own.