An illusion, whenever destroyed, gives rise to an insult. This is why pessimism, exterminator of illusions par excellence, was and always will be insulted. A normal person cannot face it without revolt, without feeling assaulted and unjustly despoiled. And he cannot help taxing it not as an unpleasant, but as a criminal. If it cannot be refuted with logic, let it be with violence! Every pessimist has to be aware of the destructive effect of his words and of the reaction that, to a greater or lesser extent, he will naturally provoke. And then he must measure how strong is his need to express himself in the face of the reprisals he will suffer. Rationally, he will probably conclude that the former is unnecessary; but he will be unhappy if he feels obliged to pay in this life the debt he has contracted with the enemies of the multitudes.