ia; and, in compliance with the precept of Augustus, once more
established the Euphrates as the frontier of the empire. [24] Censure,
which arraigns the public actions and the private motives of princes,
has ascribed to envy, a conduct which might be attributed to the
prudence and moderation of Hadrian. The various character of that
emperor, capable, by turns, of the meanest and the most generous
sentiments, may afford some color to the suspicion. It was, however,
scarcely in his power to place the superiority of his predecessor in a
more conspicuous light, than by thus confessing himself unequal to the
task of defending the conquests of Trajan.

[Footnote 22: Ovid. Fast. l. ii. ver. 667. See Livy, and Dionysius of
Halicarnassus, under the reign of Tarquin.]

[Footnote 23: St. Augustin is highly delighted with the proof of the
weakness of Terminus, and the vanity of the Augurs. See De Civitate Dei,
iv. 29. * Note: The turn of Gibbon's sentence is Augustin's: "Plus
Hadrianum regem bominum, quam regem Deorum timuisse videatur."--M]

[Footnote 24: See the Augustan History, p. 5, Jerome's Chronicle, and
all the Epitomizers. It is somewhat surprising, that this memorable
event should be omitted by Dion, or rather by Xiphilin.]

The martial and ambitious of spirit Trajan formed a very singular
contrast with the moderation of his successor. The restless activity of
Hadrian was not less remarkable when compared with the gentle repose of
Antoninus Pius. The life of the former was almost a perpetual journey;
and as he possessed the various talents of the soldier, the statesman,
and the scholar, he gratified his curiosity in the discharge of his
duty.

Careless of the difference of seasons and of climates, he marched on
foot, and bare-headed, over the snows of Caledonia, and the sultry
plains of the Upper Egypt; nor was there a province of the empire which,
in the course of his reign, was not honored with the presence of the
monarch. [25] But the tranquil life of Antoninus Pius was spent in the
bosom of Italy, and, during the twenty-three years that he directed
the public administration, the longest journeys of that amiable prince
extended no farther than from his palace in Rome to the retirement of
his Lanuvian villa. [26]

[Footnote 25: Dion, l. lxix. p. 1158. Hist. August. p. 5, 8. If all our
historians were lost, medals, inscriptions, and other monuments, would
be sufficient to record the travels of Hadrian. Note: The jo