Fluent, forcible, elegant, and persuasive speech in public; the power of expressing strong emotions in striking and appropriate language either spoken or written, thereby producing conviction or persuasion.
Fig.: Whatever produces the effect of moving and persuasive speech.
What I am looking for... is an immobile movement, something which would be the equivalent of what is called the eloquence of silence, or what St. John of the Cross, I think it was, described with the term 'mute music'. Joan Miro