At the basis of the works of all the modern historians from Gibbon to Buckle, despite their seeming disagreements and the apparent novelty of their outlooks, lie those two old, unavoidable assumptions.

In the first place the historian describes the activity of individuals who in his opinion have directed humanity (one historian considers only monarchs, generals, and ministers as being such men, while another includes also orators, learned men, reformers, philosophers, and poets). Secondly, it is assumed that the goal toward which humanity is being led is known to the historians: to one of them this goal is the greatness of the Roman, Spanish, or French realm; to another it is liberty, equality, and a certain kind of civilization of a small corner of the world called Europe.