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.
It has been the acknowledged right of every Marxist scholar to read into Marx the particular meaning that he himself prefers and to treat all others with indignation.
War is a beastly business, it is true, but one proof we are human is our ability to learn, even from it, how better to exist.