I have been pondering the prayer of Teresa of Avila, hundreds of years ago,.... she prayed that if she would not be able to speak to people in such a way as to cause them to become "mad" for God, (that is to be set on fire for God), then she asked that He would not let her speak at all.
I am relating this to what our Lord said about coming to cast fire into the earth and how greatly He desired that it would be enkindled.