He understood. He, too, in Antoinette's position, would have been jealous of the trouble he caused her: but to be the cause of it!... That hurt his pride and his affection. And what a burden it was for so weak a creature to bear such a responsibility, to be bound to succeed, since on his success his sister had staked her whole life! The thought of it was intolerable to him, and, instead of spurring him on, there were times when it robbed him of all energy. And yet she forced him to struggle on, to work, to live, as he never would have done without her aid and insistence. He had a natural predisposition towards depression,--perhaps even towards suicide:--perhaps he would have succumbed to it had not his sister wished him to be ambitious and happy. He suffered from the contradiction of his nature: and yet it worked his salvation. He, too, was passing through a critical age, that fearful period when thousands of young men succumb, and give themselves up to the aberrations of their minds and senses, and for two or three years' folly spoil their lives beyond repair. If he had had time to yield to his thoughts he would have fallen into discouragement or perhaps taken to dissipation: always when he turned in upon himself he became a prey to his morbid dreams, and disgust with life, and Paris, and the impure fermentation of all those millions of human beings mingling and rotting together. But the sight of his sister's face was enough to dispel the nightmare: and since she was living only that he might live, he would live, yes, he would be happy, in spite of himself. So their lives were built on an ardent faith fashioned of stoicism, religion, and noble ambition. All their endeavor was directed towards the one end: Olivier's success. Antoinette accepted every kind of work, every humiliation that was offered her: she went as a governess to houses where she was treated almost as a servant: she had to take her pupils out for walks, like a nurse, wandering about the streets with them for hours together under pretext of teaching them German. In her love for her brother and her pride she found pleasure even in such moral suffering and weariness.