Who said "Words are still a very powerful force."?

This quote is attributed to King Azaz.

Words are still a very powerful force. - King Azaz

"Words are still a very powerful force."

King Azaz

Character in The Phantom Tollbooth

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"Words can be commended, debased, or ignored, but they cannot be reversed."

"You can never be too careful when choosing the words you use."

"Words are such wonderful things."

"Let me see your mind."