War is an ugly thing, but not the ugliest of things: the decayed and degraded state of moral and patriotic feeling which thinks nothing worth a war, is worse. A war to protect other human beings against tyrannical injustice; a war to give victory to their own ideas of right and good, and which is their own war, carried on for an honest purpose by their own free choice - is often the means of their regeneration.
John Stuart Mill (1867). “Thoughts on parliamentary reform. Recent writers on reform. Bain's psychology. A few words on non-intervention. The contest in America. Austin on jurisprudence. Plato”, p.204