Proverbs 14:28-30

Complete Jewish Bible

²⁸ A king’s glory lies in having many subjects;
    if the prince’s people are few, it is his ruin.

²⁹ Being slow to anger goes with great understanding,
    being quick-tempered makes folly still worse.

³⁰ A tranquil mind gives health to the body,
    but envy rots the bones.