Family quarrels have a total bitterness unmatched by others.  Yet it sometimes happens that they also have a kind of tang, a pleasantness beneath the unpleasantness, based on the tacit understanding that this is not for keeps; that any limb you climb out on will still be there later for you to climb back.  ~Mignon McLaughlin
Family quarrels are bitter things. They don't go according to any rules. They're not like aches or wounds; they're more like splits in the skin that won't heal because there's not enough material
F. Scott Fitzgerald