Orison Swett Marden quotes
Don't wait for your opportunity. Make it,-- make it as the shepherd-boy Ferguson made his when he calculated the distances of the stars with a handful of glass beads on a string. Make it as George Stephenson made his when he mastered the rules of mathematics with a bit of chalk on the grimy sides of the coal wagons in the mines. Make it, as Napoleon made his in a hundred "impossible" situations. Make it, as all leaders of men, in war and in peace, have made their chances of success. Golden opportunities are nothing to laziness, but industry makes the commonest chances golden.
Pushing to the Front or, Success Under Difficulties (1894)