Solomon
Proverbs 21:10ESV·traditional attribution

The soul of the wicked desires evil; his neighbor finds no mercy in his eyes.

Matthew Henry Presbyterian @wholebiblehenry

See here the character of a very wicked man. 1. The strong inclination he has to do mischief. His very soul desires evil, desires that evil may be done and that he may have the pleasure, not only of seeing it, but of having a hand in it.

John Gill Reformed Baptist @doctorgill

The soul of the wicked desireth evil,.... The evil of sin, it being natural to him; he chooses it, delights in it, craves after it, under a notion of pleasure or profit: or the evil of mischief; it is a sport and pastime to him to do injury to others; see Pro 10:23; he desires both the one and the other with all his soul...

Jamieson-Fausset-Brown Reformed @jfbcommentary

So strongly does he desire to do evil (Psa 10:3; Ecc 8:11), that he will not even spare his friend if in his way.