He loved them; now he says he'd kill them if they came alive—what snapped inside him?

His hair was soaked with sweat, his quivering lips were parched, his eyes were fixed on the ceiling.

“Mother, sister--how I loved them! Why do I hate them now? Yes, I hate them, I feel a physical hatred for them, I can’t bear them near me.... I went up to my mother and kissed her, I remember.... To embrace her and think if she only knew... shall I tell her then? That’s just what I might do.... She must be the same as I am,” he added, straining himself to think, as it were struggling with delirium. “Ah, how I hate the old woman now! I feel I should kill her again if she came to life! Poor Lizaveta! Why did she come in?... It’s strange though, why is it I scarcely ever think of her, as though I hadn’t killed her? Lizaveta! Sonia! Poor gentle things, with gentle eyes.... Dear women! Why don’t they weep? Why don’t they moan? They give up everything... their eyes are soft and gentle.... Sonia, Sonia! Gentle Sonia!”