His theory, published in 1959 in The Evolution of Culture: The Development of Civilization to the Fall of Rome, rekindled the interest in social evolutionism and is counted prominently among the neoevolutionists.
Seine Theorie, die er 1959 in The Evolution of Culture: The Development of Civilization to the Fall of Rome veröffentlichte, belebte das Interesse am sozialen Evolutionismus wieder und gilt bei den Neoevolutionisten als herausragend.