New Revised Standard Version
Whoever is slow to anger has great understanding, but one who has a hasty temper exalts folly.

Contemporary English Version
It's smart to be patient, but it's stupid to lose your temper.

New American Bible
Long-suffering results in great wisdom; a short temper raises folly high.

Douay-Rheims Bible
He that is patient, is governed with much wisdom: but he that is impatient, exalteth his folly.

He that is patient, is governed with much wisdom: but he that is impatient, exalteth his folly.

slow

Proverbs 14:17 The impatient man shall work folly: and the crafty man is hateful.

Proverbs 15:18 A passionate man stirreth up strifes: he that is patient appeaseth those that are stirred up.

Proverbs 16:32 The patient man is better than the valiant: and he that ruleth his spirit, than he that taketh cities.

Numbers 12:3 (For Moses was a man exceeding meek above all men that dwelt upon earth)

Matthew 11:29 Take up my yoke upon you, and learn of me, because I am meek, and humble of heart: And you shall find rest to your souls.

1 Corinthians 13:4,5 Charity is patient, is kind: charity envieth not, dealeth not perversely, is not puffed up, . . .

James 1:19 You know, my dearest brethren. And let every man be swift to hear, but slow to speak and slow to anger.

James 3:17,18 But the wisdom that is from above, first indeed is chaste, then peaceable, modest, easy to be persuaded, consenting to the good, full of mercy and good fruits, without judging, without dissimulation. . . .

but

Proverbs 22:24,25 Be not a friend to an angry man, and do not walk with a furious man: . . .

Proverbs 25:8,28 The things which thy eyes have seen, utter not hastily in a quarrel: lest afterward thou mayst not be able to make amends, when thou hast dishonoured thy friend. . . .

Ecclesiastes 7:9 Be not quickly angry: for anger resteth in the bosom of a fool.

Daniel 3:19 Then was Nabuchodonosor filled with fury: and the countenance of his face was changed against Sidrach, Misach, and Abdenago, and he commanded that the furnace should be heated seven times more than it had been accustomed to be heated.

Matthew 2:16 Then Herod perceiving that he was deluded by the wise men, was exceeding angry: and sending killed all the menchildren that were in Bethlehem, and in all the borders thereof, from two years old and under, according to the time which he had diligently inquired of the wise men.

hasty

Proverbs 4:8 She shall give to thy head increase of graces, and protect thee with a noble crown.

Ecclesiastes 10:6 A fool set in high dignity, and the rich sitting beneath.