But Robespierre, who during this long debate displayed a daring and perseverance that presaged his power, appeared at the tribune to support Saint-Just, to reproach the convention with involving in doubt what the insurrection had decided, and with restoring, by sympathy and the publicity of a defence, the fallen royalist party. "The assembly," said Robespierre, "has involuntarily been led far away from the real question. Here we have nothing to do with trial: Louis is not an accused man; you are not judges, you are, and can only be, statesmen. You have no sentence to pronounce for or against a man, but you are called on to adopt a measure of public safety; to perform an act of national precaution. A dethroned king is only fit for two purposes, to disturb the tranquillity of the state, and shake its freedom, or to strengthen one or the other of them.

"Louis was king; the republic is founded; the famous question you are discussing is decided in these few words. Louis cannot be tried; he is already tried, he is condemned, or the republic is not absolved." He required that the convention should declare Louis XVI. a traitor towards the French, criminal towards humanity, and sentence him at once to death, by virtue of the insurrection.

The Mountain by these extreme propositions, by the popularity they attained without, rendered condemnation in a measure inevitable. By gaining an extraordinary advance on the other parties, it obliged them to follow it, though at a distance. The majority of the convention, composed in a large part of Girondists, who dared not pronounce Louis XVI. inviolable, and of the Plain, decided, on Pétion's proposition, against the opinion of the fanatical Mountain and against that of the partisans of inviolability, that Louis XVI. should be tried by the convention. Robert Lindet then made, in the name of the commission of the twenty-one, his report respecting Louis XVI. The arraignment, setting forth the offences imputed to him, was drawn up, and the convention summoned the prisoner to its bar.

Louis had been confined in the Temple for four months. He was not at liberty, as the assembly at first wished him to be in assigning him the Luxembourg for a residence. The suspicious commune guarded him closely; but, submissive to his destiny, prepared for everything, he manifested neither impatience, regret, nor indignation. He had only one servant about his person, Cléry, who at the same time waited on his family. During the first months of his imprisonment, he was not separated from his family; and he still found solace in meeting them. He comforted and supported his two companions in misfortune, his wife and sister; he acted as preceptor to the young dauphin, and gave him the lessons of an unfortunate man, of a captive king. He read a great deal, and often turned to the History of England, by Hume; there he read of many dethroned kings, and one of them condemned by the people. Man always seeks destinies similar to his own. But the consolation he found in the sight of his family did not last long; as soon as his trial was decided, he was separated from them. The commune wished to prevent the prisoners from concerting their justification; the surveillance it exercised over Louis XVI. became daily more minute and severe.

In this state of things, Santerre received the order to conduct Louis XVI. to the bar of the convention. He repaired to the Temple, accompanied by the mayor, who communicated his mission to the king, and inquired if he was willing to descend. Louis hesitated a moment, then said: "This is another violence. I must yield!" and he decided on appearing before the convention; not objecting to it, as Charles I. had done with regard to his judges. "Representatives," said Barrère, when his approach was announced, "you are about to exercise the right of national justice. Let your attitude be suited to your new functions;" and turning to the gallery, he added, "Citizens, remember the terrible silence which accompanied Louis on his return from Varennes; a silence which was the precursor of the trial of kings by nations." Louis XVI. appeared firm as he entered the hall, and he took a steady glance round the assembly. He was placed at the bar, and the president said to him in a voice of emotion: "Louis, the French nation accuses you. You are about to hear the charges of the indictment. Louis, be seated." A seat had been prepared for him; he sat in it. During a long examination, he displayed much calmness and presence of mind, he replied to each question appropriately, often in an affecting and triumphant manner. He repelled the reproaches addressed to him respecting his conduct before the 14th of July, reminding them that his authority was not then limited; before the journey to Varennes, by the decree of the constituent assembly, which had been satisfied with his replies; and after the 10th of August, by throwing all public acts on ministerial responsibility, and by denying all the secret measures which were personally attributed to him. This denial did not, however, in the eyes of the convention, overthrow facts, proved for the most part by documents written or signed by the hand of Louis XVI. himself; he made use of the natural right of every accused person. Thus he did not admit the existence of the iron chest, and the papers that were brought forward. Louis XVI. invoked a law of safety, which the convention did not admit, and the convention sought to protect itself from anti-revolutionary attempts, which Louis XVI. would not admit.

When Louis had returned to the Temple, the convention considered the request he had made for a defender. A few of the Mountain opposed the request in vain. The convention determined to allow him the services of a counsel. It was then that the venerable Malesherbes offered himself to the convention to defend Louis XVI. "Twice," he wrote, "have I been summoned to the council of him who was my master, at a time when that function was the object of ambition to every man; I owe him the same service now, when many consider it dangerous." His request was granted, Louis XVI. in his abandonment, was touched by this proof of devotion. When Malesherbes entered his room, he went towards him, pressed him in his arms, and said with tears:—"Your sacrifice is the more generous, since you endanger your own life without saving mine." Malesherbes and Tronchet toiled uninterruptedly at his defence, and associated M. Desèze with them; they sought to reanimate the courage of the king, but they found the king little inclined to hope. "I am sure they will take my life; but no matter, let us attend to my trial as if I were about to gain it. In truth, I shall gain it, for I shall leave no stain on my memory."

At length the day for the defence arrived; it was delivered by M. Desèze; Louis was present. The profoundest silence pervaded the assembly and the galleries. M. Desèze availed himself of every consideration of justice and innocence in favour of the royal prisoner. He appealed to the inviolability which had been granted him; he asserted that as king he could not be tried; that as accusers, the representatives of the people could not be his judges. In this he advanced nothing which had not already been maintained by one party of the assembly. But he chiefly strove to justify the conduct of Louis XVI. by ascribing to him intentions always pure and irreproachable. He concluded with these last and solemn words:— "Listen, in anticipation, to what History will say to Fame; Louis ascending the throne at twenty, presented an example of morals, justice, and economy; he had no weakness, no corrupting passion: he was the constant friend of the people. Did the people desire the abolition of an oppressive tax? Louis abolished it: did the people desire the suppression of slavery? Louis suppressed it: did the people solicit reforms? he made them: did the people wish to change its laws? he consented to change them: did the people desire that millions of Frenchmen should be restored to their rights? he restored them: did the people wish for liberty? he gave it them. Men cannot deny to Louis the glory of having anticipated the people by his sacrifices; and it is he whom it is proposed to slay. Citizens, I will not continue, I leave it to History; remember, she will judge your sentence, and her judgment will be that of ages." But passion proved deaf and incapable of foresight.

The Girondists wished to save Louis XVI., but they feared the imputation of royalism, which was already cast upon them by the Mountain. During the whole transaction, their conduct was rather equivocal; they dared not pronounce themselves in favour of or against the accused; and their moderation ruined them without serving him. At that moment his cause, not only that of his throne, but of his life, was their own. They were about to determine, by an act of justice or by a coup d'état, whether they should return to the legal regime, or prolong the revolutionary regime. The triumph of the Girondists or of the Mountain was involved in one or the other of these solutions. The latter became exceedingly active. They pretended that, while following forms, men were forgetful of republican energy, and that the defence of Louis XVI. was a lecture on monarchy addressed to the nation. The Jacobins powerfully seconded them, and deputations came to the bar demanding the death of the king.

Yet the Girondists, who had not dared to maintain the question of inviolability, proposed a skilful way of saving Louis XVI. from death, by appealing from the sentence of the convention to the people. The extreme Right still protested against the erection of the assembly into a tribunal; but the competence of the assembly having been previously decided, all their efforts were turned in another direction. Salles proposed that the king should be pronounced guilty, but that the application of the punishment should be left to the primary assembly. Buzot, fearing that the convention would incur the reproach of weakness, thought that it ought to pronounce the sentence, and submit the judgment it pronounced to the decision of the people. This advice was vigorously opposed by the Mountain, and even by a great number of the more moderate members of the convention, who saw, in the convocation of the primary assemblies, the germ of civil war.

The assembly had unanimously decided that Louis was guilty, when the appeal to the people was put to the question. Two hundred and eighty-four voices voted for, four hundred and twenty-four against it; ten declined voting. Then came the terrible question as to the nature of the punishment. Paris was in a state of the greatest excitement: deputies were threatened at the very door of the assembly; fresh excesses on the part of the populace were dreaded; the Jacobin clubs resounded with extravagant invectives against Louis XVI., and the Right. The Mountain, till then the weakest party in the convention, sought to obtain the majority by terror, determined, if it did not succeed, none the less to sacrifice Louis XVI. Finally, after four hours of nominal appeal, the president, Vergniaud, said: "Citizens, I am about to proclaim the result of the scrutiny. When justice has spoken, humanity should have its turn." There were seven hundred and twenty-one voters. The actual majority was three hundred and sixty-one. The death of the king was decided by a majority of twenty-six votes. Opinions were very various: Girondists voted for his death, with a reservation, it is true; most of the members of the Right voted for imprisonment or exile; a few of the Mountain voted with the Girondists. As soon as the result was known, the president said, in a tone of grief: "In the name of the convention, I declare the punishment, to which it condemns Louis Capet, to be death." Those who had undertaken the defence appeared at the bar; they were deeply affected. They endeavoured to bring back the assembly to sentiments of compassion, in consideration of the small majority in favour of the sentence. But this subject had already been discussed and decided. "Laws are only made by a simple majority," said one of the Mountain. "Yes," replied a voice, "but laws may be revoked; you cannot restore the life of a man." Malesherbes wished to speak, but could not. Sobs prevented his utterance; he could only articulate a few indistinct words of entreaty. His grief moved the assembly. The request for a reprieve was received by the Girondists as a last resource; but this also failed them, and the fatal sentence was pronounced.