The society of madame de la Sablière comprised princes, nobles, poets, and philosophers. She cultivated science as well as literature,--but in secret. Bernier, who also had an apartment in her house, gave La Fontaine some notions in natural philosophy. It was under this influence, whilst his head was filled with physical science, that he wrote his poem on Jesuits' bark (Le Quinquina)--a dull production, on a barren subject; which, however, was not then quite so uninviting as it may appear now. Bark had just performed what were deemed marvellous cures on Louis XIV. and Colbert, and it was sold by the Jesuits at its weight in gold. Colbert had the littleness to be unjust to La Fontaine; but the poet had the magnanimity to be just to the minister. He alludes to him in this poem in a tone of manly, independent, and merited praise. La Fontaine added considerably to the number of his fables and tales, and wrote several dramatic pieces, whilst he lived under the roof of madame de la Sablière. His dramas, chiefly operas and light comedies, with an attempt or two at tragedy, are below mediocrity. He wanted the dramatic instinct. There are scenes of easy graceful dialogue, but strung together without art or interest. Some were written by him in partnership with the comedian Champmélé, husband of the celebrated actress of that name, who played in the tragedies and figures in the life of Racine, and in the letters of madame de Sévigné. It is told of him that, whilst sitting in the pit, during the first performance of one of his own operas, he fell asleep! But this is too much, even for La Fontaine; and it should not be forgotten, that an opera was the cause of the only satire he ever wrote, and of one of the only two quarrels he ever had. The celebrated Lulli obtained his easy promise to write him an opera on the story of Daphne, teased him until it was completed, and then capriciously adopted the "Proserpine" of Quinault. La Fontaine, now an old man, or, as he called himself, "_un enfant à barbe grise_," a child with a grey beard, knew, for the first time, what it was to feel personal resentment, and wrote the satire entitled "Le Florentin." It is merely a narrative of the affair between him and Lulli, in the manner of his tales. But he was soon and easily reconciled; and he complained afterwards that the little gall in him was stirred by others on the occasion.