It is needless to say that there has been a curious change of opinion as to the merits of these men who, a century ago, were political saints of the Liberal party, but whom in the present day Liberal writers are emulously striving, with Dante, to thrust down into the nethermost hell. Dante puts Brutus and Cassius in hell not because he knows the real history of their acts, or because he is qualified to judge of the moral and political conditions under which they acted, but simply because he is a Ghibelin, and they slew the head of the Holy Roman Empire; and the present change of opinion arises, in the main, not from the discovery of any new fact, or from the better sifting of those already known, but from the prevalence of new sentiments--Imperialism of different shades, Bonapartist or Positivist, and perhaps also hero-worship, which of course fixes upon Caesar. Positivism and Hero-worship are somewhat incongruous allies, for Hero-worship is evidently the least scientific, while Positivism aims at being the most scientific, of all the theories of history. We are judging the opponents of Caesar, it seems to me, under the dominion of exaggerated notions of the beneficence of the Empire which Caesar founded, of its value as a political model, of its connection with the life of modern civilization, and of the respect, not to say devotion, due to the memory of its founder. Let us try to cast off for an hour the influence of these modern sentiments, and put the whole group of ancient figures back into its place in ancient history. The Empire was a necessity at the time when it came--granted. But a necessity of what sort? Was it a necessity created by an upward effort, by an elevation of humanity, or by degradation and decline? In the former case you may pass the same sentence upon those who opposed its coming which is passed upon those who crucified Christ, or who, like Philip II., opposed the Reformation in the spirit of bigoted reaction. But in the latter case they must be charged, not with moral blindness or depravity, but only with the lack of that clearness of sight which leads men and parties at the right moment, or even in anticipation of the right moment, to despair; and such perspicacity, to say the least, is a highly scientific quality, requiring perhaps, to make it respectable and safe, a more exact knowledge of historical sequences than we even now possess. Even now we determine these historical necessities by our knowledge of the result. It was a necessity, given all the conditions-- the treachery of Ephialtes included--that the Persians should force the pass of Thermopylae. But the Three Hundred could not know all the conditions. Even if they had, would they have done right in giving way? They fell, but their spirits fought again at Salamis.