"you see," said doctor manette, turning to him after an uneasy pause, "it is very hard to explain, consistently, the innermost workings of this poor man's mind. he once yearned so frightfully for that occupation, and it was so welcome when it came; no doubt it relieved his pain so much, by substituting the perplexity of the fingers for the perplexity of the brain, and by substituting, as he became more practised, the ingenuity of the hands, for the ingenuity of the mental torture; that he has never been able to bear the thought of putting it quite out of his reach. even now, when i believe he is more hopeful of himself than he has ever been, and even speaks of himself with a kind of confidence, the idea that he might need that old employment, and not find it, gives him a sudden sense of terror, like that which one may fancy strikes to the heart of a lost child."