Walter Bagehot (1826-1877) was a British businessman, essayist, Social Darwinist and journalist; this 1872 book is subtitled "Thoughts on the application of the principles of 'natural selection' and 'inheritance' to political society."
He states, "To sum up---LAW---rigid, definite, concise law---is the primary want of early mankind; that which they need above anything else, that which is requisite before they can gain anything else. But it is their greatest difficulty, as well as their first requisite..." (Pg. 11)
He says, "I want to bring home to others what every new observation of society brings more and more freshly to myself---that this unconscious imitation and encouragement of appreciated character, and this equally unconscious shrinking from and persecution of disliked character, is the main force which moulds and fashions men in society as we now see it." (Pg. 48)
He observes, "In a former essay, I attempted to show that slighter causes than is commonly thought may change a nation from the stationary to the progressive state of civilization, and from the stationary to the degrading. Commonly the effect of the agent... is considered as operating on every individual in the nation... [But] there is a second effect... a new model in character is created for the nation; those characters which resemble it are encouraged and multiplied; those contrasted with it are persecuted and made fewer. In a generation or two, the look of the nation, becomes quite different." (Pg. 101)
Bagehot's is a "classic" description of the tension between social institutions and innovations, and the historical evolution of social groups into nations.