Long before this dramatic _dénouement_, d’Alembert and Julie de Lespinasse had been something more than friends. But now Mademoiselle saw herself cast adrift on the world. She flung to it her reputation, and yielded, not so much to the entreaties of d’Alembert’s love, as to the more pitiful pleading his solitude and sickness made to the warm maternity in her woman’s heart. She nursed him back to convalescence, and then lived beneath the same roof with him in the Rue Belle Chasse. Picture the man with his wide, wise intelligence and his diffident and gentle nature, and the woman with her brilliant intuition and her quick, glowing impulse. To his exact logic she could add feeling, passion, sympathy; his frigid and awkward style she could endow with life and fire. Many of his manuscripts are covered with her handwriting. Some, she certainly inspired. She had read widely and felt keenly, and her lover had weighed, pondered, considered. For him, who had for himself no ambition, she could dare and hope all. The perpetual Secretaryship of the Academy shall be turned from a dream to a fact! In that age of women’s influence no woman had in her frail hands more to give and to withhold than this poor companion, whose marvellous power over men and destinies lay not in her head, but in her heart. The true complement of a d’Alembert, daring where he was timid, fervent where he was cold, a woman’s feeling to quicken his man’s reason--here should have been indeed the marriage of true minds. Oh, I must feel your brain prompt mine, Your heart anticipate my heart. You must be just before, in fine, See and make me see, for your part, New depths of the divine! Yet d’Alembert’s is the most piteous love-story in history. If Mademoiselle had yielded to his sadness and his loneliness, she had never loved him. Only a year after she had joined him, d’Alembert, alluding to some rumours which had been afloat concerning their marriage, wrote bitterly, ‘What should _I_ do with a wife and children?’ But there was only one real obstacle to their union. Across Mademoiselle’s undisciplined heart there lay already the shadows of another passion. From the first the household in the Rue Belle Chasse had been absolutely dominated by the woman. ‘In love, who loves least, rules.’ D’Alembert was in bondage while she was free. To keep her, he submitted to humours full of bitterness and sharpness--the caprices of that indifferent affection which gives nothing and exacts all. In her hands, he was as a child; his philosophies went to the winds; his very reason was prostrate. How soon was it he began to guess he had a rival in her heart?