I am starting to get into Nietzsche's philosophy, through his book "The joyful wisdom"/"the gay science". In the first chapter, "The Teachers of the Object of Existence", he writes:
Whether I look with a good or an evil eye upon men, I find them always at one problem, each and all of them: to do that which conduces to the conservation of the human species.
And after a few lines:
Even the most hurtful man is still perhaps, in respect to the conservation of the race, the most useful of all; for he conserves in himself or by his effect on others, impulses without which mankind might long ago have languished or decayed
The first thing that comes to my mind are people like Hitler and Stalin. Does this idea not ignore their presence? Or am I missing something?