The nerve that never relaxes, the eye that never blanches, the thought that never wanders, the purpose that never wavers - these are the masters of victory.
Less good from genius we may find than that from perseverance flowing; so have good grist at hand to grind, and keep the mill a-going.
The greatest results in life are usually attained by simple means and the exercise of ordinary qualities. These may for the most part be summed up in these two - common sense and perseverance.
Great works are performed, not by strength, but by perseverance. Yonder palace was raised by single stones, yet you see its height and spaciousness. He that shall walk with vigor three hours a day will pass in seven years a space equal to the circumference of the globe.
The difference between perseverance and obstinacy is: that one often comes from a strong will, and the other from a strong won't.
No rock so hard but a little wave may beat admission in a thousand years.