Solomon
Proverbs 13:15ESV·traditional attribution

Good sense wins favor, but the way of the treacherous is their ruin.

Matthew Henry Presbyterian @wholebiblehenry

If we compare not only the end, but the way, we shall find that religion has the advantage; for, 1. The way of saints is pleasant and agreeable: Good understanding gains favour with God and man; our Saviour grew in that favour when he increased in wisdom.

John Gill Reformed Baptist @doctorgill

Good understanding giveth favour,.... A good understanding in things natural and civil gives favour among men; and so a good understanding in divine and spiritual things gives a man favour among religious people, makes him taken notice of by them, and acceptable to them: and such an understanding no man has, unless it be given him; and such appear to have one that do the commandments of God, Psa 111:10.

Jamieson-Fausset-Brown Reformed @jfbcommentary

Right perception and action secure good will, while evil ways are difficult as a stony road. The wicked left of God find punishment of sin in sinning. hard--or, "harsh" (compare Hebrew: Deu 21:4; Jer 5:15).