Sharpening the skill of clear communication
What is the goal of communication? A seemingly tricky question with a remarkably simple answer: shared understanding. That's it. It doesn't matter whether you're conveying something true or false, caring or cruel. The goal is that both parties understand what is being communicated.
One way to sharpen this skill is by examining the speech of people who are extremely articulate in expressing their ideas on complex topics (whether or not you agree with the content). Studying this shows that it's more of an art than a science - it's not always a matter of knowing more, but instead about using the most precise words that reflect your intent.