Musavada veramani sikkhapadam samadiyami
I undertake the precept to refrain from incorrect speech.
Though I've only ever seen one Buddha statue depicted with its mouth open, he actually had a lot, A LOT to say, and a fair part of that was on right speech.
"And what is right speech? Abstaining from lying, from divisive speech, from abusive speech, and from idle chatter: This is called right speech."
One of the parallels between Vipassanna and Zen practice is to see things as they truly are, starting from within. To see yourself as you truly are requires absolute self honesty. It requires whatever's behind that inner voice to suck it up and admit reality. Once we admit to ourselves who we are, with some more effort, we may begin to actually change. We might even open ourselves up to the rest of the world!