“The mouth is a symbol of consciousness…thoughts are conditioning instruments. This means that when you think, you are actually differentiating. When the mind goes beyond words, it goes beyond thoughts and thereby experiences undifferented consciousness.
Speaking is an art to be performed when it will do the most good and not for idle talk or for showing off to others or those who do not wish to listen.
(cited from Introduction to Ma’at Philosophy: The Wisdom of Maati)