Perseverance

"People of mediocre ability sometimes achieve outstanding success because they don't know when to quit. Most men succeed because they are determined to." George E. Allen


"In the confrontation between the stream and the rock, the stream always wins- not through strength but by perseverance." H. Jackson Brown

"Perseverance is more prevailing than violence; and many things which cannot be overcome when they are together, yield themselves up when taken little by little." Plutarch

 

"Perseverance is not a long race; it is many short races one after another." Walter Elliott