Solomon
Proverbs 10:17ESV·traditional attribution

Whoever heeds instruction is on the path to life, but he who rejects reproof leads others astray.

Matthew Henry Presbyterian @wholebiblehenry

See here, 1. That those are in the right that do not only receive instruction, but retain it, that do not let it slip through carelessness, as most do, nor let it go to those that would rob them of it, that keep instruction safely, keep it pure and entire, keep it for their own use, that they may govern themselves by it, keep it...

John Gill Reformed Baptist @doctorgill

He is in the way of life,.... Of eternal life, which is truly, properly, and by way of eminency, "life", Mat 19:17; and which is a life of glory; a life of perfection, of perfect holiness, knowledge, obedience, love, peace, and joy; a life free from all the inconveniences of the present life, animal or spiritual; a life of pleasure, and which will last for...

Jamieson-Fausset-Brown Reformed @jfbcommentary

keepeth--observes (Pro 3:18; Pro 4:22). refuseth--or, "turns from reproof," which might direct him aright.