The music introducing the following scene has the effect of lifting the story on to a plane of larger things. The proportions of the personages, in the light of the magnifying music, are seen to be heroic, their natures vast, their passions, in their very tremendousness, august.
Tristan stops at the entrance and waits deferentially. Constraint makes him into a man of chill iron. There is a long moment of heavy-laden silence. He is first to speak: "Make known to me, lady, your wish!" She comes to the point at once. "Do you not know my wish, when the dread of fulfilling it has kept you afar from my glance?" He evades her, as he had before evaded Brangaene. "Reverence laid its compulsion upon me!"—"Small reverence have you shown me. With overt scorn you have refused obedience to my command."—"Obedience alone restrained me."—"Paltry cause should I have to thank your master, if his service required of you discourtesy to his own consort."—"Custom demands," he quietly meets this, "where I have lived, that the escort of the bride, while bringing her home, should keep afar from her presence."—"For what reason?"—Stiffly as he stands, his answer resembles a shrug. "Ask of custom!"—"Since you cherish so great a regard for custom, my lord Tristan," Isolde mocks, "let me remind you of what likewise is a custom: to make peace with the enemy, if he is to report you as his friend." "And what enemy?" he questions, unmoved. "Inquire of your terror!... Blood-guiltiness stands between us!"—"That was made good!"—"Not between us!"—"In the open field, before the assembled people, a solemn oath was sworn to let vengeance rest."—"Not there was it, not in the open field, that I kept Tantris concealed, that Tristan lay at my mercy. In the open field he stood magnificent, hale and brave; the thing however which he swore, I fore bore to swear. I had learned to keep silence. When he lay languishing in the hushed chamber, and I stood silent before him with the sword, though my mouth no made sound, though my hand refrained, yet the thing which I had sworn with hand and mouth I silently renewed my oath to perform. I now intend to keep it."—"What did you swear, lady?" Tristan asks simply, without effect of defiance. "Vengeance for Morold!" she hurls at him. He seems to wonder. A sort of numbness has been creeping over him; an atmosphere of dream has closed around him; her neighbourhood, her voice, no matter what words she is saying, even these angry and cruel ones, have an effect of lulling, of making the real world seem unreal. "Are you concerned for that?" he asks, with the sincerity of that state of having lost grasp on things as it is agreed to pretend they are. "Dare you to mock me?" she rages, "He was affianced to me, the gallant Irish hero. I had consecrated his arms, for me he went into battle. When he fell, my honour fell with him. In the heaviness of my heart I swore an oath that if no man would take vengeance for his murder, I, a woman, would find the hardihood for it. Why, when sick and feeble you lay in my power, I did not strike, explain to yourself by easy interpretation: I cared for your wound, that a man in sound health should be struck down by the vengeful hand of him who won Isolde. Judge for yourself now what your doom shall be. Since the men are all your adherents, who is to smite Tristan?" More than ever it seems like the atmosphere of a dream closing down upon him, a dream in which they move, projecting incredible things. But he has perfectly seized her meaning, and even in a dream a man acts in character. Pale and self-contained, he hands her his unsheathed sword, and his voice shows a first tinge of emotion as he speaks the name of Morold, whom, it would almost seem, she had loved. "If Marold was so dear to you, again take up the sword, and drive it surely and steadfastly, that it may not drop from your grasp!"
If she seemed somewhat like a lioness before, striding and chafing in her regal rage, she is again, it must be confessed, a little like one now, but presenting a different aspect of the great feline, a sort of cruelty, a need to torment before sacrificing. "What would King Mark say if I were to slay his best servant, the most faithful of his retainers, who won for him crown and land? Does it seem to you such a paltry matter, that for which he stands indebted to you, bringing home to him the Irish bride, that he would not chide, should I slay the envoy who so faithfully delivers into his hands the hostage of the peace-compact?... Put up your sword! When upon a time I brandished it, my heart hot with desire for vengeance, at your gazing upon me with an eye that took my measure, to see if I would answer as a wife for King Mark"—(There, there is point of insufferable bitterness!)—"I let the sword sink. Let us drink now to our reconciliation!"
By a sign she orders Brangaene to bring the draught. The poor creature shrinks away shuddering. Isolde, by a gesture more peremptory still, repeats her command, and Brangaene is seen tremulously busying herself with the golden casket and the golden cup. Again the sing-song chorus is heard, of the sailors hauling in the topsail. The sound falls with a shock upon Tristan's ear. "Where are we?" he cries, in bewilderment. "Close to our destination!" Isolde replies significantly. They are so close indeed to the end of their voyage that anything there is to say must be said now, and she invites, with a first suspicion of softness, some expression from him of regret, some explanation before they die, some attempt at justification of his so unkind-seeming return to the woman who had nursed and saved him. "Tristan, shall I obtain amends? What have you to say to me?" But he is guarded now as earlier; the compulsion of honour is no less strong upon him than before. "The lady of silence," he replies darkly, "teaches me to be silent. I apprehend, mayhap, what she concealed.... I conceal what she does not apprehend!"—"I shall apprehend the reason of your silence," she exclaims angrily, "if you mean to elude me. Do you refuse to drink to our peace-making?"
Brangaene has brought the cup. Tristan gazes rigidly into Isolde's eyes as she approaches him bearing it. "The voyage nears its end. In brief space we shall stand," her lip curls with irony, "before King Mark! As you lead me to him, should you not deem it an apt speech to make: My lord and uncle, look at her well! A meeker woman you could never hope to win. I slew her affianced, I sent home to her his head; the wound made by his weapon she graciously healed. My life lay in her power; the gentle maid made me a gift of it, and gave her consent to the dishonour and degradation of her country that she might become your wife. In kind acknowledgment of my good gifts to her, she mixed me a sweet peace-draught; of her grace she tendered this to me, to make all offences forgotten!" No, Tristan can hardly entertain a doubt of the cup's contents which the princess holds toward him with her ambiguous smile. But her right, aside from any other consideration, is recognised as indubitable to the life which she saved. We have from his own lips later what his emotions were in this moment so pregnant with fate. What we see is that he stands like a man in a dream. A voice is heard outside shouting orders to the sailors: "Up with the cable! Free the anchor!" He starts awake—he rises as if with a spring to the height of the moment. "Anchor loose!" he cries wildly. "Helm to the stream! Sails and mast to the wind!" Ay, let go all regards and restraints of life, since life itself is about to be tossed over. There is zest in doing it, and then rid at once forever of the puzzling world of duty and prudence and heart-starvation! He snatches the goblet from Isolde's hand: "Well do I know Ireland's queen and the magic power of her arts. I made use of the balm which she proffered, I take the cup from her now, that I to-day may completely recover. And do you mark the pledge with which, grateful, I drink to our peace!" It is an answer, this enigmatic pledge, to her wistful question: "What have you to say to me?" He cannot pass into silence, and leave her forever with her unmingled contempt for him. By broken intimations he flashes light upon the thing which his lips are interdicted from revealing. Charged with emotion, the words chime slowly: "Tristan's honour,—highest truth!... Tristan's misery,—cruellest spite!... Lure of the heart!... Dream-intuitions!... Sole comforter of an eternal woe, merciful draught of forgetfulness, unwaveringly I drink!" He sets the cup to his lips and is drinking as he said, when with the cry: "Defrauded here too! Mine, one half!" Isolde wrests the goblet from him: "Traitor, I drink to you!" and drains it, unwavering as he.
The empty cup drops from her hand. They stand in suspense, gazing at each other, as defiantly they await death. The searching potion in a moment begins to take effect; each sees in the eyes of the other a new thing dawning, strange and beautiful; a trembling seizes upon their limbs. They press their hands convulsively to their hearts, the seat of an incomprehensible trouble, then to their foreheads, within which the brain seems to have become subject to over-wild delusions. Their eyes meet again, and are averted in a confused terror; but, invincibly allured, again seek the other—and both gaze with increasing, at last unconquerable, yearning. With tremulous lips she speaks his name,—a complete confession in the one word so spoken. Passionately he calls hers,—confession for confession. She sinks overpowered on his breast. He clasps her ardently to him. Brangaene wrings her hands at sight of them locked in their long, mute embrace. Her work this, the work of her disobedient hands which, too weak for the stern task assigned them, poured out the love-potion in place of the death-draught. "Woe, woe," she wails, "eternal, irredeemable woe, instead of brief death! Behold the pernicious work of a foolish fondness blossoming heavenward in lamentation!"
The two move apart for a moment in order better to gaze at each other. "What was I dreaming," he falters, "of Tristan's honour?" "What was I dreaming," she wonderingly asks, "of indignities to Isolde?"—"You, lost to me?" Could man have imagined so wild a thing! "You repulsing me?" Probable, it seems, as he stretches to her those yearning arms! It has all been a malignant trick, then, of evil sorcery! Restored at length from that delusion, they yield themselves exultantly to the tide of passion that has caught them away and shall carry them whither it will, scornful of the whole world, lost in each other, conscious of a sweetness in the surrender surpassing all that life had given them to suspect.
The peculiar action of the potion is detected from the above. It seems less to create passion than to remove all that obscured and controlled it, dissolve the barriers which up to the moment of drinking stood so effectively between the two. Tristan's will crumbles under it, the will which had kept him loyal to Mark, which had made him, to the point of offence, shun the radius of her dangerous magnetism. Isolde's pride melts under it, which had enabled her to keep up with herself and him a fiction of hate for the man who had wronged her. All that keeps love within bounds being burned away, it towers in a sublime conflagration. Their sense of the change is that they have awakened from a dream; but the effect of the potion has been in truth rather more to plunge them into a state of dream, in which while one emotion is in the ascendant the others sleep,—reason sleeps, will sleeps, all other interests and considerations sleep, leaving love free to reach proportions and an intensity unknown during wakefulness.
They have not heard or heeded the cries of the crew: "Hail, hail, King Mark!" The curtains of the pavilion are suddenly drawn wide apart. The ship's company crowds the deck; all are gazing toward the land. Tristan and Isolde take account of nothing, their senses fast sealed to all but the contemplation of each other. Brangaene and other women place on Isolde's unconscious shoulders the royal mantle, and deck her, unaware of it, with jewels. Kurwenal comes running to his master: "Hail, Tristan, fortunate hero! King Mark, with rich rout of courtiers, approaches in a barge. Ha! He looks well pleased, coming to meet the bride!" Tristan asks, dazed: "Who approaches?"—"The King!"—"What king?"—Kurwenal points overboard. Tristan stares landward, not comprehending. The men shout and wave their caps. "Hail, King Mark!"—"What is it?" Isolde inquires, reached in her trance by the clamour; "Brangaene, what cry is that?"—"Isolde, mistress," the distraught Brangaene implores, "self-control for this one day!"—"Where am I?" the bewildered lady asks helplessly. "Am I alive?..." What, the question asks itself, what is this still familiar surrounding scene, when they ought, by true working of the drug, to be dead? If any thought had accompanied the overmastering impulse which she had blindly followed, it had been that before death all disguises drop, that in dying one is sincere. But since death had not followed the drinking of the draught—"Ha! What draught was that?" she asks in consternation. Brangaene gives the desperate truth. "The love-draught!" Isolde's eyes widen with horror, and turning from Brangaene fix themselves upon Tristan. The situation flashes before her for one shocked moment in its true colours; and as before her calling his name had revealed all love, it reveals now her sense of an unspeakable awfulness in what has happened to them. As he calls her name, too, it expresses, with his boundless tenderness, pity and a tragic recognition of the black ingredient in the cup which had lifted them to such heights of intoxication. "Must I live?" speaks the last glimmer of the old Isolde, provided normally with a moral nature; and overwhelmed by the greatness of the catastrophe she sinks fainting upon his breast. A last glimmer of the old Tristan groans aloud: "O rapture beset with snares! Bliss on betrayal built!"
Trumpets are heard. The eager expectancy of all indicates that the King's barge is close at hand. The curtain falls.