Feel it and believe it

When you say something to your child, remember to feel it and believe it, or you'll be sending mixed messages, and the tone might be louder than the words. And with babies and toddlers, the tone might be the entirety of the communication.

The quote is from page 208 (or 241) of The Big Book of Unschooling,
which references this webpage: Tone of Voice and Joy.
photo by Sandra Dodd, in Amsterdam