Pope would often rise in the night to write out thoughts that would not come during the busy day.

Grote wrote his matchless "History of Greece" during the hours of leisure snatched from his duties as a banker.
George Stephenson seized the moments as though they were gold.

He educated himself and did much of his best work during his spare moments.
He learned arithmetic during the night shifts when he was an engineer.
Mozart would not allow a moment to slip by unimproved.

He would not stop his work long enough to sleep, and would sometimes write two whole nights and a day without intermission.

He wrote his famous "Requiem" on his death-bed.
Caesar said: "Under my tent in the fiercest struggle of war I have always found time to think of many other things." He was once shipwrecked, and had to swim ashore; but he carried with him the manuscript of his "Commentaries," upon which he was at work when the ship went down.
Dr.Mason Good translated "Lucretius" while riding to visit his patients in London.