The Magic Mountain by Thomas Mann

With the swift-changing years, a spirit began to walk in House Berghof: a spirit of immediate descent, or so Hans Castorp surmised, from that other demon whose baleful name we have spoken. With the facile curiosity of inquiring youth on its travels, he had studied this new demon, yes, had even discovered in himself an alarming aptitude, in common with the rest of the world up here, to pay him extensive homage. This new evil genius had, like the other, always been present, as it were, in the germ, but now it began to spread itself; Hans Castorp had by nature no great predilection for becoming its slave; yet with something like horror he observed that even he, when he let himself go ever so little, fell victim to a contagion so general that scarce anyone in the circle escaped it.

What was this, then, that was in the air? A rising temper. Acute irritability. A nameless rancour. A universal tendency to envenomed exchange of words, to outbursts of rage -- yes, even to fisticuffs. Embittered disputes, bouts of uncontrolled shrieking, by pairs and by groups, were of daily occurrence; and the significant thing was that the bystanders, instead of being disgusted with the participants, or seeking to come between them, actually sympathized with one side or the other to the extent of being themselves involved in the quarrel. They would pale and tremble, their eyes would glitter provocatively, their mouths set with passion. They envied those actively engaged the chance, the justification for screaming; a gnawing desire to do likewise possessed mind and body, and he who could not summon strength to flee apart, was soon willy-nilly in the midst of the melee. The fruitless dissensions, the mutual recriminations, in the face of authorities bent on accommodation but themselves falling with alarming ease a prey to the general temptation to brawl -- these become frequent occurrences in House Berghof. A patient might issue forth of the house in tolerable tranquillity and not know at all in what frame he would return. A member of the "good" Russian table, an elegant dame from the provinces, from Minsk, still young, and a light case, with only three months prescribed, betook herself one day to the village to make purchases at the French lingerie shop; fell there into a quarrel with the modiste, of such dimensions that she came back in a state of violent excitement, suffered a hemorrhage, and was thenceforth incurable. The husband was summoned, and informed that her stay up here would terminate only with her life.