Life of John Sterling by Thomas Carlyle

In spite of these wanderings, Sterling's course in life, so far as his poor life could have any course or aim beyond that of screening itself from swift death, was getting more and more clear to him; and he pursued it diligently, in the only way permitted him, by hasty snatches, in the intervals of continual fluctuation, change of place and other interruption.

Such, once for all, were the conditions appointed him. And it must be owned he had, with a most kindly temper, adjusted himself to these; nay you would have said, he loved them; it was almost as if he would have chosen them as the suitablest. Such an adaptation was there in him of volition to necessity: -- for indeed they both, if well seen into, proceeded from one source. Sterling's bodily disease was the expression, under physical conditions, of the too vehement life which, under the moral, the intellectual and other aspects, incessantly struggled within him. Too vehement; -- which would have required a frame of oak and iron to contain it: in a thin though most wiry body of flesh and bone, it incessantly "wore holes," and so found outlet for itself. He could take no rest, he had never learned that art; he was, as we often reproached him, fatally incapable of sitting still. Rapidity, as of pulsing auroras, as of dancing lightnings: rapidity in all forms characterized him. This, which was his bane, in many senses, being the real origin of his disorder, and of such continual necessity to move and change, -- was also his antidote, so far as antidote there might be; enabling him to love change, and to snatch, as few others could have done, from the waste chaotic years, all tumbled into ruin by incessant change, what hours and minutes of available turned up. He had an incredible facility of labor. He flashed with most piercing glance into a subject; gathered it up into organic utterability, with truly wonderful despatch, considering the success and truth attained; and threw it on paper with a swift felicity, ingenuity, brilliancy and general excellence, of which, under such conditions of swiftness, I have never seen a parallel. Essentially an _improviser_ genius; as his Father too was, and of admirable completeness he too, though under a very different form.