For some natures, changing their opinions is just as much a requirement of cleanliness as changing their clothes: for others, however, it is merely a requirement of vanity.
Friedrich NietzscheWar has always been the grand sagacity of every spirit which has grown too inward and too profound; its curative power lies even in the wounds one receives.
Friedrich NietzscheThe snake which cannot cast its skin has to die. As well the minds which are prevented from changing their opinions; they cease to be mind.
Friedrich Nietzsche