Passage
He that hath knowledge spareth his words: and a man of understanding is of an excellent spirit.
He that hath knowledge spareth his words: and a man of understanding is of an excellent spirit.
Proverbs 17:25 A foolish son is a grief to his father, and bitterness to her that bare him.
Proverbs 17:26 Also to punish the just is not good, nor to strike princes for equity.
Proverbs 17:27 He that hath knowledge spareth his words: and a man of understanding is of an excellent spirit.
Proverbs 17:28 Even a fool, when he holdeth his peace, is counted wise: and he that shutteth his lips is esteemed a man of understanding.
The verse centers on "Spirit", "hath", "knowledge", "spareth", "words", "understanding", and "excellent". It is saying that the verse draws attention to "Spirit" and "hath", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 26's "Also to punish the just is not..." into verse 28's "Even a fool when he holdeth his...", so "Spirit" and "hath" belong inside that flow. In Proverbs context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "Spirit" and "hath" with trust shaped by these words, not by a vague optimism outside the passage.