To this view of the imperial character and relations must be added one single circumstance, which in some measure altered the whole for the individual who happened to fill the office. The emperor _de facto_ might be viewed under two aspects; there was the man, and there was the office. In his office he was immortal and sacred: but as a question might still be raised, by means of a mercenary army, as to the claims of the particular individual who at any time filled the office, the very sanctity and privilege of the character with which he was clothed might actually be turned against himself; and here it is, at this point, that the character of Roman emperor became truly and mysteriously awful. Gibbon has taken notice of the extraordinary situation of a _subject_ in the Roman empire who should attempt to fly from the wrath of the Caesar. Such was the ubiquity of the emperor that this was metaphysically hopeless. Except across pathless deserts or amongst barbarous nomads, it was impossible to find even a transient sanctuary from the imperial pursuit. If the fugitive went down to the sea, there he met the emperor: if he took the wings of the morning, and fled to the uttermost parts of the earth, there was also Caesar in the person of his lieutenants. But, by a dreadful counter-charm, the same omnipresence of imperial anger and retribution which withered the hopes of the poor humble prisoner, met and confounded the emperor himself, when hurled from his elevation by some fortunate rival. All the kingdoms of the earth, to one in that situation, became but so many wards of the same infinite prison. Flight, if it were even successful for the moment, did but a little retard his inevitable doom. And so evident was this, that hardly in one instance did the fallen prince _attempt_ to fly; passively he met the death which was inevitable, in the very spot where ruin had overtaken him. Neither was it possible even for a merciful conqueror to show mercy; for, in the presence of an army so mercenary and factious, his own safety was but too deeply involved in the extermination of rival pretenders to the crown.