Part of the defeated army was shut up in Prague. Part fled to join the troops which, under the command of Daun, were now close at hand. Frederic determined to play over the same game which had succeeded at Lowositz. He left a large force to besiege Prague, and at the head of thirty thousand men he marched against Daun. The cautious Marshal, though he had a great superiority in numbers, would risk nothing. He occupied at Kolin a position almost impregnable, and awaited the attack of the King.

It was the eighteenth of June,—a day which, if the Greek superstition still retained its influence, would be held sacred to Nemesis,—a day on which the two greatest princes of modern times were taught, by a terrible experience, that neither skill nor valor can fix the inconstancy of fortune. The battle began before noon; and part of the Prussian army maintained the contest till after the midsummer sun had gone down. But at length the King found that his troops, having been repeatedly driven back with frightful carnage, could no longer be led to the charge. He was with difficulty persuaded to quit the field. The officers of his personal staff were under the necessity of expostulating with him, and one of them took the liberty to say, "Does your Majesty mean to storm the batteries alone?" Thirteen thousand of his bravest followers had perished. Nothing remained for him but to retreat in good order, to raise the siege of Prague, and to hurry his army by different routes out of Bohemia.

This stroke seemed to be final. Frederic's situation had at best been such that only an uninterrupted run of good luck could save him, as it seemed, from ruin. And now, almost in the outset of the contest, he had met with a check which, even in a war between equal powers, would have been felt as serious. He had owed much to the opinion which all Europe entertained of his army. Since his accession, his soldiers had in many successive battles been victorious over the Austrians. But the glory had departed from his arms. All whom his malevolent sarcasms had wounded made haste to avenge themselves by scoffing at the scoffer. His soldiers had ceased to confide in his star. In every part of his camp his dispositions were severely criticised. Even in his own family he had detractors. His next brother, William, heir-presumptive, or rather, in truth, heir-apparent to the throne, and great-grandfather of the present king, could not refrain from lamenting his own fate and that of the House of Hohenzollern, once so great and so prosperous, but now, by the rash ambition of its chief, made a byword to all nations. These complaints, and some blunders which William committed during the retreat from Bohemia, called forth the bitter displeasure of the inexorable King. The prince's heart was broken by the cutting reproaches of his brother; he quitted the army, retired to a country seat, and in a short time died of shame and vexation.

It seemed that the King's distress could hardly be increased. Yet at this moment another blow not less terrible than that of Kolin fell upon him. The French under Marshal D'Estrées had invaded Germany. The Duke of Cumberland had given them battle at Hastembeck, and had been defeated. In order to save the electorate of Hanover from entire subjugation, he had made, at Closter Seven, an arrangement with the French generals, which left them at liberty to turn their arms against the Prussian dominions.

That nothing might be wanting to Frederic's distress, he lost his mother just at this time; and he appears to have felt the loss more than was to be expected from the hardness and severity of his character. In truth, his misfortunes had now cut to the quick. The mocker, the tyrant, the most rigorous, the most imperious, the most cynical of men, was very unhappy. His face was so haggard and his form so thin, that when on his return from Bohemia he passed through Leipsic, the people hardly knew him again. His sleep was broken; the tears, in spite of himself, often started into his eyes; and the grave began to present itself to his agitated mind as the best refuge from misery and dishonor. His resolution was fixed never to be taken alive, and never to make peace on condition of descending from his place among the powers of Europe. He saw nothing left for him except to die; and he deliberately chose his mode of death. He always carried about with him a sure and speedy poison in a small glass case; and to the few in whom he placed confidence he made no mystery of his resolution.

But we should very imperfectly describe the state of Frederic's mind, if we left out of view the laughable peculiarities which contrasted so singularly with the gravity, energy, and harshness of his character. It is difficult to say whether the tragic or the comic predominated in the strange scene which was then acting. In the midst of all the great King's calamities, his passion for writing indifferent poetry grew stronger and stronger. Enemies all round him, despair in his heart, pills of corrosive sublimate hidden in his clothes, he poured forth hundreds upon hundreds of lines, hateful to gods and men, the insipid dregs of Voltaire's Hippocrene, the faint echo of the lyre of Chaulieu. It is amusing to compare what he did during the last months of 1757 with what he wrote during the same time. It may be doubted whether any equal portion of the life of Hannibal, of Cæsar, or of Napoleon, will bear a comparison with that short period, the most brilliant in the history of Prussia and of Frederic. Yet at this very time the scanty leisure of the illustrious warrior was employed in producing odes and epistles, a little better than Cibber's, and a little worse than Hayley's. Here and there a manly sentiment which deserves to be in prose makes its appearance in company with Prometheus and Orpheus, Elysium and Acheron, the plaintive Philomel, the poppies of Morpheus, and all the other frippery which, like a robe tossed by a proud beauty to her waiting-woman, has long been contemptuously abandoned by genius to mediocrity. We hardly know any instance of the strength and weakness of human nature so striking, and so grotesque, as the character of this haughty, vigilant, resolute, sagacious blue-stocking, half Mithridates and half Trissotin, bearing up against a world in arms, with an ounce of poison in one pocket and a quire of bad verses in the other.

Frederic had some time before made advances towards a reconciliation with Voltaire; and some civil letters had passed between them. After the battle of Kolin their epistolary intercourse became, at least in seeming, friendly and confidential. We do not know any collection of letters which throws so much light on the darkest and most intricate parts of human nature as the correspondence of these strange beings after they had exchanged forgiveness. Both felt that the quarrel had lowered them in the public estimation. They admired each other. They stood in need of each other. The great King wished to be handed down to posterity by the great Writer. The great Writer felt himself exalted by the homage of the great King. Yet the wounds which they had inflicted on each other were too deep to be effaced, or even perfectly healed. Not only did the scars remain; the sore places often festered and bled afresh. The letters consisted for the most part of compliments, thanks, offers of service, assurances of attachment. But if anything brought back to Frederic's recollection the cunning and mischievous pranks by which Voltaire had provoked him, some expression of contempt and displeasure broke forth in the midst of eulogy. It was much worse when anything recalled to the mind of Voltaire the outrages which he and his kinswoman had suffered at Frankfort. All at once his flowing panegyric was turned into invective. "Remember how you behaved to me. For your sake I have lost the favor of my native king. For your sake I am an exile from my country. I loved you. I trusted myself to you. I had no wish but to end my life in your service. And what was my reward? Stripped of all that you had bestowed on me, the key, the order, the pension, I was forced to fly from your territories. I was hunted as if I had been a deserter from your grenadiers. I was arrested, insulted, plundered. My niece was dragged through the mud of Frankfort by your soldiers, as if she had been some wretched follower of your camp. You have great talents. You have good qualities. But you have one odious vice. You delight in the abasement of your fellow creatures. You have brought disgrace on the name of philosopher. You have given some color to the slanders of the bigots, who say that no confidence can be placed in the justice or humanity of those who reject the Christian faith." Then the King answers, with less heat but equal severity: "You know that you behaved shamefully in Prussia. It was well for you that you had to deal with a man so indulgent to the infirmities of genius as I am. You richly deserved to see the inside of a dungeon. Your talents are not more widely known than your faithlessness and your malevolence. The grave itself is no asylum from your spite. Maupertuis is dead; but you still go on calumniating and deriding him, as if you had not made him miserable enough while he was living. Let us have no more of this. And, above all, let me hear no more of your niece. I am sick to death of her name. I can bear with your faults for the sake of your merits; but she has not written Mahomet or Merope."

An explosion of this kind, it might be supposed, would necessarily put an end to all amicable communication. But it was not so. After every outbreak of ill humor this extraordinary pair became more loving than before, and exchanged compliments and assurances of mutual regard with a wonderful air of sincerity.

It may well be supposed that men who wrote thus to each other were not very guarded in what they said of each other. The English ambassador, Mitchell, who knew that the King of Prussia was constantly writing to Voltaire with the greatest freedom on the most important subjects, was amazed to hear his Majesty designate this highly favored correspondent as a bad-hearted fellow, the greatest rascal on the face of the earth. And the language which the poet held about the King was not much more respectful.

It would probably have puzzled Voltaire himself to say what was his real feeling towards Frederic. It was compounded of all sentiments, from enmity to friendship, and from scorn to admiration; and the proportions in which these elements were mixed changed every moment. The old patriarch resembled the spoiled child who screams, stamps, cuffs, laughs, kisses, and cuddles within one quarter of an hour. His resentment was not extinguished; yet he was not without sympathy for his old friend. As a Frenchman, he wished success to the arms, of his country. As a philosopher, he was anxious for the stability of a throne on which a philosopher sat. He longed both to save and to humble Frederic. There was one way, and only one, in which all his conflicting feelings could at once be gratified. If Frederic were preserved by the interference of France, if it were known that for that interference he was indebted to the mediation of Voltaire, this would indeed be delicious revenge; this would indeed be to heap coals of fire on that haughty head. Nor did the vain and restless poet think it impossible that he might, from his hermitage near the Alps, dictate peace to Europe. D'Estrées had quitted Hanover, and the command of the French army had been entrusted to the Duke of Richelieu, a man whose chief distinction was derived from his success in gallantry. Richelieu was in truth the most eminent of that race of seducers by profession, who furnished Crébillon the younger and La Clos with models for their heroes. In his earlier days the royal house itself had not been secure from his presumptuous love. He was believed to have carried his conquests into the family of Orleans; and some suspected that he was not unconcerned in the mysterious remorse which embittered the last hours of the charming mother of Louis the Fifteenth. But the Duke was now sixty years old. With a heart deeply corrupted by vice, a head long accustomed to think only on trifles, an impaired constitution, an impaired fortune, and, worst of all, a very red nose, he was entering on a dull, frivolous, and unrespected old age. Without one qualification for military command, except that personal courage which was common between him and the whole nobility of France, he had been placed at the head of the army of Hanover; and in that situation he did his best to repair, by extortion and corruption, the injury which he had done to his property by a life of dissolute profusion.