Suppose one undertook the discipline of speaking only what one knew was given to speak? How quiet our homes, our churches and work places would be. Our society plays very loose with words, with talk; yet there is little silence, and silence is where meaning comes from.
Ultimately, we have just one moral duty: to reclaim large areas of peace in ourselves, more and more peace, and to reflect it toward others. And the more peace there is in us, the more peace there will be in our troubled world.