Two of the following proverbs have similar meanings. Which ones are they?

Question

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Fair words fill not the belly and Fine words butter no parsnip mean that nothing can be achieved by flattery or empty promises.
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A picture is worth a thousand words means that a picture tells a story as well as-or even better than-mere words.
A word to the wise is sufficient means that a wise person can take a hint and does not need to be told twice to do or not do something.
Many a true word is spoken in jest means that a humorous remark may turn out to be very accurate after all.

Two of the Following Proverbs Have Similar Meanings