Proverbs 15:21

19 The way of the slothful man is as an hedge of thorns: but the way of the righteous is made plain.

20 A wise son maketh a glad father: but a foolish man despiseth his mother.

Folly is joy to him that is destitute of wisdom: but a man of understanding walketh uprightly.

22 Without counsel purposes are disappointed: but in the multitude of counsellors they are established.

23 A man hath joy by the answer of his mouth: and a word spoken in due season, how good is it!

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
Folly is joy to one who lacks judgment, but a man of understanding walks a straight path.
KJV
Folly is joy to him that is destitute of wisdom: but a man of understanding walketh uprightly.
WEB
Folly is joy to one who is void of wisdom, but a man of understanding keeps his way straight.
ASV
Folly is joy to him that is void of wisdom; But a man of understanding maketh straight his going.
DARBY
Folly is joy to him that is void of sense; but a man of understanding regulateth his walk.
BLB
Folly [is] joy to the one lacking heart, and a man of understanding makes straight [his] walk.
ÅB
Dårskap er en glede for den som er uten forstand; men en forstandig mann går rett fram.
OTB
Dårskap er glede for den som mangler forstand, men en forstandig person går en rett vei.
B1930
Dårskap er en glede for den som er uten forstand; men en forstandig mann går rett frem.

Study notes (Tyndale)

Original text and word study

Cross references