“Proverbs divides humanity into two classes: the wise and righteous over against fools and the wicked. These wisdom and ethical terms are correlative, for though they do not mean the same thing they have the same referent. … a wise heart produces righteous behavior, and a foolish heart produces wicked behavior. On the other hand, righteousness is not merely behavior but a way of being. In any case, there is no third category, no in-between.” — Bruce Waltke