The difference between perseverance and obstinacy is that one comes from a strong will, and the other from a strong won’t.
- Henry Ward Beecher

It’s not that I’m so smart, it’s just that I stay with problems longer.
- Albert Einstein

Money grows on the tree of persistence.
- Japanese proverb

Ambition is the path to success. Persistence is the vehicle you arrive in.
- Bill Bradley or William Eardley, IV (unverified)

If we are facing in the right direction, all we have to do is keep on walking.
- Buddhist Saying