Anatoly Karlin describes Peter Turchin’s War and Peace and War as Ibn Khaldun, Malthus, and Saint Matthew meet up for coffee:
Ranging from Ermak’s subjugation of the Sibir Khanate to the rise of Rome, Turchin makes the case that the rise and fall of empires is reducible to three basic concepts: 1) Asabiya – social cohesiveness and capacity for collective action, 2) Malthusian dynamics – the tendency for population to outgrow the carrying capacity, and 3) the “Matthew Principle” – the tendency for inequality and social stratification to increase over time. The interplay between these three forces produces the historical patterns of imperial rise and fall, of war and peace and war, that were summarized by Thomas Fenne in 1590 thus:
Warre bringeth ruine, ruine bringeth poverty, poverty procureth peace, and peace in time increaseth riches, riches causeth statelinesse, statelinesse increaseth envie, envie in the end procureth deadly malice, mortall malice proclaimeth open warre and bataille, and from warre again as before is rehearsed.