accomplish great things

"To accomplish great things, we must not only act, but also dream, not only plan, but also believe." 

-Anatole France  

...who have kept on trying

"Most of the important things in the world have been accomplished by people who have kept on trying when there seemed to be no help at all." 

-Dale Carnegie  

...by the obstacles

"You measure the size of the accomplishment by the obstacles you had to overcome to reach your goals."
- Booker T. Washington  

...can overcome

"Real difficulties can be overcome; it is only the imaginary ones that are unconquerable." 

-Theodore N. Vail  

fail in originality

"It is better to fail in originality than to succeed in imitation."

- Herman Melville