The word "lips" represents what wise people say. The writer speaks of knowledge as if it were seeds that wise people scatter around when they speak. Alternate translation: "The speech of wise people spreads knowledge" (See: [[rc://en/ta/man/translate/figs-metaphor]] and [[rc://en/ta/man/translate/figs-metonymy]])
Possible meanings are 1) the word "hearts" is synecdoche for the fools themselves and means that they do not scatter knowledge like wise people do. Alternate translation: "fools do not scatter knowledge about" or 2) fools do not have knowledge in their hearts, with "hearts" being a metonym for the thoughts. Alternate translation: "fools do not understand knowledge" (See: [[rc://en/ta/man/translate/figs-synecdoche]] and [[rc://en/ta/man/translate/figs-metonymy]])
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