"[A]ny society... is at once a structure which can only be understood in terms of the interrelationship of its parts, and a process which can only be understood in terms of the cumulative weight of its past. The difficulty is to synthesize the two aspects in any actual study. Liberal history and formalist sociology represent extreme opposed attempts to divorce the two dimensions altogether.... The coexistence of the two in the Anglo-Saxon countries marks the limits of the penetration of Marxism in these cultures. For Marxism is the only thought which has rigorously united developmental and structural analysis: it is at once pure historicity (denial of all suprahistorical essences) and radical functionalism (societies are significant totalities). This synthesis remains unique…"