In the early spring of 1670, Louis XIV.'s sister-in-law, the ill-fated Henrietta of England, daughter of Charles I., persuaded Corneille and Racine to write each a tragedy on the story of Titus and Berenice, without each other's knowledge, and consequently without the knowledge of any one else. Her object in so doing was, in all probability, merely to bring the relative merits of the two great dramatists to a decisive test, though rumour assigned a romantic reason for her choice of the subject, to wit, a desire to see upon the stage a little story analogous to that of her one-time relations with Louis XIV. Madame's death, famous for its disputed causes and Bossuet's funeral oration, occurred in the following June; but this did not interfere with the completion of the plays, which were produced within a few days of one another, the secret having been so well kept that until then neither of the poets had the faintest conception that they had been simultaneously engaged on the same subject.

Racine was the first in the field, his Bérénice being produced at the Hôtel de Bourgogne on November 21, Floridor playing Titus, and Mlle. de Champmeslé the beautiful Jewess. Corneille's Tite et Bérénice appeared at the Palais-Royal, eight days later, with La Thorillière and Mlle. Molière in the title-parts.

The result of the duel to which the two dramatists found themselves, all unwittingly, committed was wholly in favour of the younger, Corneille's play, notwithstanding some fine passages, being unworthy of his reputation.[44] It was probably to this fact and to the admirable acting of Mlle. de Champmeslé, rather than to any special merits of his own, that Racine was indebted for his easy triumph. Approved by the king and applauded by the public, his Bérénice remained in the bills until after the thirtieth performance; but it did not please the critics, Boileau declaring that had he been consulted he would have endeavoured to dissuade his friend from undertaking so poor a theme; while Chapelle, when asked by Racine for his opinion, replied in two verses of an old song:—

"Marion pleure, Marion crie,
Marion veut qu'on la marie."

An answer which nearly caused a quarrel between him and the poet.

To Bérénice, early in the following January, succeeded Baiazet, Mlle. de Champmeslé playing the part of Roxane. Madame de Sévigné attended the fifth performance, and next day writes to Madame de Grignan: "We have been to see the new play by Racine, and thought it admirable. My daughter-in-law[45] is, in my opinion, the best performer I ever saw. She is a hundred leagues in front of Des Œillets, and I, who am supposed to have some talent for acting, am not worthy to light the candles when she appears.... I wish you had been with me that afternoon; I am sure you would not have thought your time ill spent. You would have dropped a tear or two, for I myself shed twenty; besides, you would have greatly admired your sister-in-law."[46] Bajazet printed, the Marchioness sent her daughter a copy: "If I could send Champmeslé with it, you would find the tragedy among the best; without her, it loses half its value. Racine's plays are written for Champmeslé, and not for posterity. Whenever he grows old and ceases to be in love, it will be seen whether or not I am mistaken."[47]

Mlle. de Champmeslé did not by any means confine her creations to her lover's heroines; the répertoire of the Hôtel de Bourgogne was a rich one. Thus, in March of that same year, she appeared in the title-part in Ariane, a new tragedy by her fellow-townsman, Thomas Corneille. This play was praised by some critics, but, in all probability, owed its success almost entirely to her impersonation of the heroine, "which drew the public as the light draws the moth." Madame de Sévigné was again among the audience, and wrote of the actress in terms of enthusiasm: "The Champmeslé is something so extraordinary that in your life you never saw any one like her. It is the actress that people flock to see, not the play. I went to Ariane entirely for the sake of seeing her. The tragedy is insipid; the rest of the players wretched. But when the Champmeslé appears, every one is enthralled, and the tears of the audience flow at her despair."[48]

When, seven years later, Mlle. de Champmeslé migrated to the Théâtre Guénégaud, it was in Ariane that she secured her first triumph. "Ariane," wrote Donneau de Visé in the Mercure, "has been extremely well attended. Mlle. de Champmeslé, that inimitable actress, has drawn tears from the majority of the audience." The natural manner of her acting and her pathetic rendering of the hapless heroine gave indeed to the play a new lease of life.

Another brilliant success awaited her in the part of Monime, in Racine's Mithridate, produced on January 13, 1673, the day after its author's reception at the Academy. The play was received with enthusiasm; and Madame de Coulanges wrote to Madame de Sévigné, then on a visit to her daughter, in Provence: "Mithridate is charming; you see it thirty times, and the thirtieth it seems finer than the first."[49] On March 4, it was played at Saint-Cloud, before Monsieur (the Duc d'Orléans), the Duke of Monmouth, Madame de Guise, the Princesse de Monaco, and other distinguished persons; and, in the following August, at Saint-Ouen, where Boisfranc, Surintendant des Finances to Monsieur, was entertaining a party from the Court. For her rôle, which was a most exacting one—Mlle. Clairon confesses in her Mémoires, that she had never succeeded in playing it entirely to her satisfaction—Mlle. de Champmeslé appears to have received very careful instruction from Racine; and the critics were agreed that seldom had anything more expressive and charming than her acting been seen. She was particularly admirable in the scene in the third act, where Monime inadvertently confesses to the jealous Mithridate her love for his son Xiphanès. "Her cry of anguish when she sees that she has betrayed the secret of her heart, sent a shudder through every vein of the spectators and transported them with emotion." Brossette tells us that one day, when dining with Boileau, the conversation turned on the subject of declamation, whereupon the poet repeated this passage in the tone of Mlle. de Champmeslé, as a perfect example of the art.