In effect, all his former terror—the terror of the scientist who feels himself surrounded by secret enemies, had returned. Ever since he had been living alone in the deserted house he had had a feeling of returning danger, of being constantly watched in secret. The circle had narrowed, and if he showed such anger at these attempts at invasion, if he repulsed his mother’s assaults, it was because he did not deceive himself as to her real plans, and he was afraid that he might yield. If she were there she would gradually take possession of him, until she had subjugated him completely. Therefore his former tortures returned, and he passed the days watching; he shut up the house himself in the evening, and he would often rise during the night, to assure himself that the locks were not being forced. What he feared was that the servant, won over by his mother, and believing she was securing his eternal welfare, would open the door to Mme. Félicité. In fancy he saw the papers blazing in the fireplace; he kept constant guard over them, seized again by a morbid love, a torturing affection for this icy heap of papers, these cold pages of manuscript, to which he had sacrificed the love of woman, and which he tried to love sufficiently to be able to forget everything else for them. Pascal, now that Clotilde was no longer there, threw himself eagerly into work, trying to submerge himself in it, to lose himself in it. If he secluded himself, if he did not set foot even in the garden, if he had had the strength, one day when Martine came up to announce Dr. Ramond, to answer that he would not receive him, he had, in this bitter desire for solitude, no other aim than to kill thought by incessant labor. That poor Ramond, how gladly he would have embraced him! for he divined clearly the delicacy of feeling that had made him hasten to console his old master. But why lose an hour? Why risk emotions and tears which would leave him so weak? From daylight he was at his table, he spent at it his mornings and his afternoons, extended often into the evening after the lamp was lighted, and far into the night. He wished to put his old project into execution—to revise his whole theory of heredity, employing the documents furnished by his own family to establish the laws according to which, in a certain group of human beings, life is distributed and conducted with mathematical precision from one to another, taking into account the environment—a vast bible, the genesis of families, of societies, of all humanity. He hoped that the vastness of such a plan, the effort necessary to develop so colossal an idea, would take complete possession of him, restoring to him his health, his faith, his pride in the supreme joy of the accomplished work. But it was in vain that he threw himself passionately, persistently, without reserve, into his work; he succeeded only in fatiguing his body and his mind, without even being