Whenever an event occurs a man appears or men appear, by whose will the event seems to have taken place. Napoleon III issues a decree and the French go to Mexico. The King of Prussia and Bismarck issue decrees and an army enters Bohemia. Napoleon I issues a decree and an army enters Russia. Alexander I gives a command and the French submit to the Bourbons. Experience shows us that whatever event occurs it is always related to the will of one or of several men who have decreed it.

The historians, in accord with the old habit of acknowledging divine intervention in human affairs, want to see the cause of events in the expression of the will of someone endowed with power, but that supposition is not confirmed either by reason or by experience.