The fact was, he was putting a strong constraint on himself in confining his attention for the sake of winning Deronda's favor; and like a man in an uncomfortable garment he gave himself relief at every opportunity, going out to smoke, or moving about and talking, or throwing himself back in his chair and remaining silent, but incessantly carrying on a dumb language of facial movement or gesticulation: and if Mirah were in the room, he would fall into his old habit of talk with her, gossiping about their former doings and companions, or repeating quirks and stories, and plots of the plays he used to adapt, in the belief that he could at will command the vivacity of his earlier time. 
The fact was, he was putting a strong constraint on himself for the sake of winning Deronda's favour; and like a man in an uncomfortable garment he gave himself relief at every opportunity, going out to smoke, or moving about and talking; and if Mirah were in the room, he would fall into his old habit of gossiping, or repeating stories, in the belief that he could command his old vivacity. 