Proverbs 19:8-10

Amplified Bible

⁸ 
He who gains wisdom and good sense loves (preserves) his own soul;
He who keeps understanding will find good and prosper.
⁹ 
A false witness will not go unpunished,
And he who breathes lies will perish.
¹⁰ 
Luxury is not fitting for a fool;
Much less for a slave to rule over princes.