Terry Tempest Williams said this quote

Conversation is the vehicle for change. We test our ideas. We hear our own voice in a concert with another. And inside those pauses of listening, we approach new territories of thought. A good argument, call it a discussion, frees us. Words fly out of our mouths like threatened birds. Once released, they may never return. If they do, they have chosen home and the bird-worms are calmed into an ars poetica.