But, besides all this, the discord of inner natural tendencies betrays him into further misfortunes of his own invention, and reduces other members of his species, through the oppression of lordly power, the barbarism of wars, and the like, to such misery, while he himself does all he can to work destruction on his race, that, even with the utmost goodwill on the part of external nature, its end, supposing it were directed to the happiness of our species, would never be attained in a system of terrestrial nature, because our own nature is not capable of it.