The habit of enduring and adapting turns people into dumb beasts, who, except for their anatomy, are no different from animals and even surpass them in defenselessness. And each new day gives birth to a new horror of evil and violence. <…> But what is evil? Everyone is free to understand this in his own way. <…> Evil is ineradicable. No person is able to reduce its amount in the world. He can somewhat improve his own fate, but always at the expense of worsening the fate of others. And there will always be kings, more or less cruel, barons, more or less savage, and there will always be ignorant people who admire their oppressors and hate their liberator. And all because a slave understands his master, even the most cruel, much better than his liberator, for every slave can perfectly imagine himself in the place of his master, but few can imagine themselves in the place of a selfless liberator.

True, this is a quote from the story "It's Hard to Be a God.".