De Quincey calls attention to one merit of Antoninus, which, he says, has been “utterly unnoticed hitherto by historians, but which will hereafter obtain a conspicuous place in any perfect record of the steps by which civilization has advanced and human nature been exalted.  It is this:  Marcus Aurelius was the first great military leader who allowed rights indefeasible, rights uncancelled by misfortune in the field, to the prisoner of war.  Others had been merciful and variously indulgent, upon their own discretion, and upon a random impulse, to some, or possibly to all of their prisoners; ... but Marcus Aurelius first resolutely maintained that certain indestructible rights adhered to every soldier simply as a man, which rights capture by the sword, or any other accident of war, could do nothing to shake or diminish....  Here is an immortal act of goodness built upon an immortal basis; for so long as armies congregate and the sword is the arbiter of international quarrels, so long will it deserve to be had in remembrance that the first man who set limits to the empire of wrong, and first translated within the jurisdiction of man’s moral nature that state of war which had heretofore been consigned by principle no less than by practice to anarchy, animal violence, and brute force, was also the first philosopher who sat upon a throne.  In this, and in his universal spirit of forgiveness, we cannot but acknowledge a Christian by anticipation....  And when we view him from this distant age, as heading that shining array, the Howards and the Wilberforces, who have since then, in a practical sense, hearkened to the sighs of ’all prisoners and captives,’ we are ready to suppose him addressed by the great Founder of Christianity in the words of Scripture, ’Thou art not far from the kingdom of God.’"[32]

Born to be a thinker rather than an actor, by nature framed for the life of a recluse, by temperament inclined to private study and contemplation, this best of emperors and of men by Providential destiny was doomed to spend the greater part of his days in the tumult of affairs, and, like a true Roman, died at last a soldier’s death in his camp on the banks of the Danube, where, in after years, another line of “Roman Emperors,” the sovereigns of the “Holy Roman Empire of Germany,” had their seat.  For more than a century after his death, and so long as Rome retained a remnant of her old vitality, a grateful people adored him as a saint, and he who “had no bust, picture, or statue of Marcus in his house was looked upon as a profane and irreligious man.”  To this day, beside the equestrian statue named by Merivale, in the heart of modern Rome, a few steps from her principal thronged thoroughfare, a column which time has spared still commemorates the last of the Romans.  The Emperor’s statue which once surmounted it was destroyed, and centuries after the statue of St. Paul exalted to the vacant place, as if to show that the “height of Rome” is not quite the perfection of all humanity, and that even the purest of ancient philosophies is incomplete without the supplement of a more humane and universal wisdom.