in support of there being a natural kind of anger, we have [indeed] replied that the sage will become angry."
May seem counter-intuitive to celebrate this statement, but I think this is very useful in reinforcing the statement in Diogenes Laertius just before 118 to the effect that "He [the wise man] will be more deeply moved by feelings, but this will not prove an obstacle to wisdom." Texts like this help separate the Epicurean school from those who overdose on calmness, tranquility, and imperturbability. I would expect Epicurus would be happy to leave those extremes to the Stoics or Buddhists and the like, and that Epicurus would endorse "appropriate" responsive feeling to most any situation. And I doubt I really need to hedge with the "most" in that sentence.