Proverbs 26:10-12

Amplified Bible

¹⁰ 
Like a [careless] archer who [shoots arrows wildly and] wounds everyone,
So is he who hires a fool or those who [by chance just] pass by.
¹¹ 
Like a dog that returns to his vomit
Is a fool who repeats his foolishness.
¹² 
Do you see a man [who is unteachable and] wise in his own eyes and full of self-conceit?
There is more hope for a fool than for him.^(A)