The Teachers of the Object of Existence.—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 certainly not out of any sentiment of love for this species, but simply because nothing in them is older, stronger, more inexorable and more unconquerable than that instinct,—because it is precisely the essence of our race and herd. Although we are accustomed readily enough, with our usual short-sightedness, to separate our neighbours precisely into useful and hurtful, into good and evil men, yet when we make a general calculation, and reflect longer on the whole question, we become distrustful of this defining and separating, and finally leave it alone. 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. Hatred, delight in mischief, rapacity and ambition, and whatever else is called evil—belong to the marvellous economy of the conservation of the race; to be sure a costly, lavish,
