[Sidenote:--14--] Antoninus also disturbed him and involved him in vain worry by his intemperate life, by his evident intention to murder his brother if the chance should present itself, and finally by plotting against his own father. Once he leaped suddenly out of his quarters, shouting and bawling and feigning to have been wronged by Castor. This man was the best of the Caesarians attending upon Severus, had been trusted with his opinions, and had been assigned the duties of chamberlain. Certain soldiers with whom previous arrangements had been made hereupon gathered and joined the outcry; but they were checked in short order, as Severus himself appeared on the scene and punished the more unruly among them. On another occasion both were riding to meet the Caledonians for the purpose of receiving them and holding a conference about a truce, and Antoninus undertook to kill his father outright with his own hand. They were going along on their horses, for Severus, although his feet were rather shrunken [Footnote: Reading [Greek: hypotetaekos] (suggestion of Boissevain, who does not regard Naber's emendation, Mnemosyne, XVI, p. 113, as feasible).] by an ailment, nevertheless was on horseback himself and the rest of the army was following: the enemy's force, too, was likewise a spectator. At this juncture, in the midst of the silence and order, Antoninus reined up his horse and drew his sword, apparently intending to strike his father in the back. Seeing this, the other horsemen in the detachment raised a cry of alarm, which scared the son, so that he did nothing further. Severus turned at their shout and saw the sword; however, he uttered not a syllable but ascended the tribunal, finished what he had to do, and returned to the general's tent. Then he called his son and Papinianus and Castor, ordered a sword to be placed within easy reach, and upbraided the youth for having dared to do such a thing at all and especially for having been on the point of committing so great a crime in the presence of all the allies and the enemy. Finally he said: "Now if you desire to slay me and have done, put an end to me here. You are strong: I am an old man and prostrate. If you have no objection to this, but shrink from becoming my actual murderer, there stands by your side Papinianus the prefect, whom you may order to put me out of the way. He will certainly do anything that you command, since you are emperor." Though he spoke in this fashion, he still did the plotter no harm, in spite of the fact that he had often blamed Marcus for not ending the life of Commodus and that he had himself often threatened his son with this treatment. Such words, however, were invariably spoken in a fit of anger: on this occasion he allowed his love of offspring to get the better of his love of country; yet in doing so he simply betrayed his other child, for he well knew what would happen.