Her power soon became unlimited and invincible, for her heart was of iron, and even her feminine hand could wield all the terrors of court banishment, confiscation, exile, and the Bastille. It is said that a witticism of Frederic II. of Prussia, at her expense, plunged France into all the horrors of the Seven Years' War. The most high-born ladies in the land were her waiting-women. Her steward was a knight of the order of St. Louis. When she rode out in her sedan-chair, the Chevalier d'Hénin, a member of one of the noblest families of the kingdom, walked respectfully by her side, with her cloak upon his arm, ready to spread it over her shoulder whenever she should alight. She summoned embassadors before her, and addressed them with the regal _we_, assuming the style of royalty. She appointed bishops and generals, and filled all the important offices of Church and State with those who would do her homage. She dismissed ministers and created cardinals, declared war and made peace. Voltaire paid court to her, and devoted his muse to the celebration of her beauty and her talents. Montesquieu, Diderot, and Quesnay waited in her antechamber, imploring her patronage. Those authors who pleased her she pensioned and honored; those who did not were left in poverty and neglect. Even the imperial Maria Theresa, seeking the alliance of France, wrote to her with her own hand, addressing her as her "dear friend and cousin." "Not only," said Madame de Pompadour one day to the Abbé de Bernis, "not only have I all the nobility at my feet, but even my lap-dog is weary of their fawnings." Rousseau, strong in the idolatry of the nation, refused to join the worshipers at the shrine of Pompadour. She dared not send _him_ to the Bastille, but vexatiously exclaimed "I will have nothing more to do with that _owl_." As Madame de Pompadour found her charms waning, she maintained her place by ministering to the king's appetites in the establishment of the most infamous institution ever tolerated in a civilized land. Lacretelle, in his History of France, thus describes this abomination: "Louis XV., satiated with the conquests which the court offered him, was led by a depraved imagination to form an establishment for his pleasures of such an infamous description that, after having depicted the debaucheries of the regency, it is difficult to find terms appropriate to an excess of this kind. Several elegant houses, built in an inclosure called the _Parc aux Cerfs_, near Versailles, were used for the reception of beautiful female children, who there awaited the pleasure of their master. Hither were brought young girls, sold by their parents, and sometimes forced from them. It was skillfully and patiently fostered by those who ministered to the profligacy of Louis; whole years were occupied in the debauchery of girls not yet in a marriageable age, and in undermining the principles of modesty and fidelity in young women."