"A philosophical attempt to write a general world history according to a plan of nature that aims at a perfect civic association of mankind must be considered possible and even helpful to this intention of nature." 9th Principle
"The means that Nature employs to accomplish the development of all faculties is the antagonism of men in society, since this antagonism becomes, in the end, the cause of a lawful order of this society. I mean by antagonism the asocial sociability of man, i.e., the propensity of men to enter into a society, which propensity is, however, linked to a constant mutual resistance that threatens to dissolve this society." 4th Principle