Instead of finding, as he had imagined, that his late experience had dulled his susceptibility to fresh emotion, it seemed that the lot of this young creature, whose swift travel from her bright rash girlhood into this agony of remorse he had had to behold in helplessness, pierced him the deeper because it came close upon another sad revelation of spiritual conflict: he was in one of those moments when the very anguish of passionate pity makes us ready to choose that we will know pleasure no more, and live only for the stricken and afflicted. 
This young creature's agony of remorse pierced him with passionate pity. 