At various stages of evolution, the Indian cultures were presented with only a limited number of possibilities. The members of certain kinds of societies—the small band, the large band, the tribe, the chiefdom, the state, and variations of these—tended to make characteristic choices concerning religion, law, government, and art... Such choices were not... consciously made... For a particular society, they either worked or they did not work.
Man's Rise to Civilization (1968)