"The Metternich system had been inspired by the eighteenth century notion of the universe as a great clockwork: Its parts were intricately intermeshed, and a disturbance of one upset the equilibrium of the others. Bismarck represented a new age. Equilibrium was seen not as harmony and mechanical balance, but as a statistical balance of forces in flux. Its appropriate philosophy was Darwin's concept of the survival of the fittest. Bismarck marked the change from the rationalist to the empiricist conception of politics.... Bismarck declared the relativity of all beliefs; he translated them into forces to be evaluated in terms of the power they could generate."