Mishle 26:10-12

Orthodox Jewish Bible

¹⁰ Like an archer wounding all, so is he that hireth the kesil (fool), or hireth the passerby.

¹¹ As a kelev returneth to his vomit, so a kesil (fool) returneth to his folly.

¹² Seest thou an ish chacham in his own eyes? There is more tikvah (hope) for a kesil (fool) than for him.