Agnes Callard explains:
… at times it is only the angry who are in a position to apprehend the magnitude of some injustice. For they are the ones willing to sacrifice all their other concerns and interests so as to attend, with an almost divine focus, to some tear in the moral fabric. When I am really angry, it is not even clear to me that I can calm down—the eyes of the heart do not have eyelids—and the person making that request strikes me, to adapt a locution of Socrates’, as trying to banish me from my property, the truth. They are calling me “irrational,” but they seem not to see that there are reasons to be angry.