What we do not understand we do not dominate; on the contrary, it dominates us, or at least menaces us, taking the form of evil; hence the psychological attitude of the ancients toward history must be described as pessimistic. They saw much greatness fall, but they never discovered the greatness that does not fall and that rises up greater after every fall. For this reason a flood of bitterness inundates their histories. Happiness, beauty of human life, always seemed to be something that had been and was no longer, and were it present would have soon been lost. For the Romans and those professing the cult of Rome, it was primitive, austere, victorious Rome; and all the Roman historians, big and little, Livy, Sallust, and Tacitus, Paterculus and Florus, fix their gaze upon that image, as they lament the corruption of later days. Once it was Rome that trampled the world underfoot; but they knew that the triumphant queen must some day become slave from queen that once she was. This thought manifests itself in the most various forms, from the melancholy meditations of Scipio upon the ruins of Carthage to the fearful expectation of the lordship which--as Persia to Babylonia and Macedonia to Persia--must succeed to that of the Romans (the theory of the 'four monarchies' has its origin in the Græco-Roman world, whence it filtered into Palestine and into the Book of Daniel). Sometimes repressed, sometimes outspoken, we hear the anxious question: Who will be the successor and the gravedigger? Will it be the menacing Parthian? Will it be the Germans, so rich in new and mysterious energy?--all this, despite the proud consciousness of ancient times that had uttered the words "Rome, the eternal city." Certainly, that general pessimism is not altogether coherent, for no pessimism can be so altogether, and here and there appear fugitive hints of a perception of human progress in this or that part of life. We find, for instance, Tacitus, bitterest of men, remarking that _nec omnia apud priores meliora, sed nostra quoque ætas multa laudis et artium imitanda tulit,_ and one of the speakers in the _De oratoribus_ observes that literary forms change with the times and that it is owing to the _vitio malignitatis humana_ that we hear the perpetual praise of ancient things and the perpetual abuse of things modern. Another interlocutor in the same dialogue draws attention to the dialectic connexion between the turbulence of life and the greatness of art, whence Rome _donec erravit, donec se partibus et dissensionibus confecit,_ precisely at that time _tulit valentiorem eloquentiam._ This linking together of good and evil is not altogether absent in ancient philosophy, and is also to be found here and there in ancient historiography. Sallust, for example, is of opinion that Rome remained in good health so long as she had Carthage opposed to her and giving her trouble. Readers of Cicero and of Seneca will be aware that the