Effort only fully releases its reward after a person refuses to quit.
— Napoleon Hill
The longest voyages make the richest returns.
— Matthew Henry
That which we persist in doing becomes easier for us to do. Not that the nature of the thing has changed, but our power to do has increased.
— Heber Grant
Great works are performed not by strength, but perseverance.
— Samuel Johnson
There are but two roads that lead to an important goal and to the doing of great things: strength and perseverance. Strength is the lot of but a few privileged men; but austere perseverance, harsh and continuous, may be employed by the smallest of us and rarely fails of its purpose, for its silent power grows irresistibly greater with time.
— Johann von Goethe