Musar על משלי 21:29

The impudent person is called wicked, as it is said: "A wicked man hardens his face" (Prov. 21:29). And the wicked are ugly and despicable before the Lord, Blessed He be. And the name of the wicked is ugly, as it is written: "But the name of the wicked shall rot" (Prov. 10:7). On the quality of a sense of shame it is said: "And He teaches the humble His way" (Ps. 25:9). And concerning the wicked impudent it is said: "But the way of the wicked He makes crooked" (Ps. 146:9).