Hard Times by Book 1 Chapter 15 Page 12

those subtle essences of humanity which will elude the utmost cunning of algebra until the last trumpet ever to be sounded shall blow even algebra to wreck. The barriers were too many and too high for such a leap. With his unbending, utilitarian, matter-of-fact face, he hardened her again; and the moment shot away into the plumbless depths of the past, to mingle with all the lost opportunities that are drowned there.

Removing her eyes from him, she sat so long looking silently towards the town, that he said, at length: ‘Are you consulting the chimneys of the Coketown works, Louisa?’

‘There seems to be nothing there but languid and monotonous smoke. Yet when the night comes, Fire bursts out, father!’ she answered, turning quickly.