There are four types of natures: (1) [One who is] easy to anger and easy to appease, his reward is offset by his loss; (2) [one who is] difficult to anger and difficult to appease, his loss is offset by his reward; (3) [one who is] difficult to anger and easy to appease [is] a pious person. (4) [One who is] easy to anger and difficult to appease [is] a wicked person.