The political philosopher Charles-Louis de Secondat, Baron of Montesquieu, applied the principles of the balance of power to domestic policy by describing a concept of checks and balances later institutionalized in the American Constitution. He went on from there into a philosophy of history and of the mechanisms of societal change. Surveying the histories of various societies, Montesquieu concluded that events were never caused by accident. There was always an underlying cause that reason could discover and then shape to the common good:
