The Old Curiosity Shop by Charles Dickens

At length, the crisis of the old man's disorder was past, and he began to mend. By very slow and feeble degrees his consciousness came back; but the mind was weakened and its functions were impaired. He was patient, and quiet; often sat brooding, but not despondently, for a long space; was easily amused, even by a sun-beam on the wall or ceiling; made no complaint that the days were long, or the nights tedious; and appeared indeed to have lost all count of time, and every sense of care or weariness. He would sit, for hours together, with Nell's small hand in his, playing with the fingers and stopping sometimes to smooth her hair or kiss her brow; and, when he saw that tears were glistening in her eyes, would look, amazed, about him for the cause, and forget his wonder even while he looked.

The child and he rode out; the old man propped up with pillows, and the child beside him. They were hand in hand as usual. The noise and motion in the streets fatigued his brain at first, but he was not surprised, or curious, or pleased, or irritated. He was asked if he remembered this, or that. ‘O yes,' he said, ‘quite well--why not?' Sometimes he turned his head, and looked, with earnest gaze and outstretched neck, after some stranger in the crowd, until he disappeared from sight; but, to the question why he did this, he answered not a word.