To be your best you must persist.

The secret of success is conviction and persistence.

Never give up on what you really want to do. The person with big dreams is more powerful than one with all the facts.

Faced with a mountain, I will not quit. I will keep on striving until I climb over it, find a path through it, tunnel under it, or simply stay and turn it into a gold mine.

This is the mark of a really admirable man: steadfastness in the face of trouble.

Persistence guarantees that results are inevitable.

You have to be burning with an idea, or a problem, or a wrong that you want to right. If you're not passionate enough from the start, you'll never stick it out.