17 Iron sharpeneth iron; so a man sharpeneth the countenance of his friend.
13 Happy is the man that findeth wisdom, and the man that obtaineth understanding.
28 Even a fool, when he holdeth his peace, is counted wise; and he that shutteth his lips is esteemed as a man of understanding.
8 He that getteth wisdom loveth his own soul; he that keepeth understanding shall find good.
18 For in much wisdom is much vexation; and he that increaseth knowledge increaseth sorrow.
5 A fool despiseth his father's correction; but he that regardeth reproof is prudent.
12 A prudent man seeth the evil, and hideth himself; but the thoughtless pass on, and are punished.