Two leaped out at me:
Emotions Are More Important Than Facts: To prompt conversation, you need to make an emotional connection.
The Only Thing That Matters Is That You Care: The most important thing is that you care about your topic and that you have some passion for it.
I immediately thought of this video, made to call attention to what it is like to be living on the streets today. I don’t think adding PowerPoint slides would have improved upon this message, do you? As of today, more than a million people have downloaded the video from YouTube.
Thanks to Jeff Hurt for pointing out Beth’s post.