Perseverance

"A man is great not because he hasn't failed; a man is great because failure hasn't stopped him."

"I have never met a man so ignorant that I couldn't learn something from him."

"A hero is one who knows how to hang on one minute longer."

"Patience is of two kinds: patience over what pains you, and patience against what you covet."

"Concentrate on a single goal, a single task, and beat it into submission."

"Our greatest glory is not in never falling, but in rising every time we fall."

"In the realm of ideas everything depends on enthusiasm... in the real world all rests on perseverance."

"It is a rough road that leads to the heights of greatness."

"A gem cannot be polished without friction, nor a man perfected without trials."

"Hardship often prepares an ordinary person for an extraordinary destiny."

"There is no shortcut to success. You have to put in the work."

"Victory belongs to the most persevering."

"I am only an average man, but by George, I work harder at it than the average man."

"You don't learn to walk by following rules. You learn by doing, and by falling over."

"Anything that is worth doing is worth doing better."

"The world is moving so fast these days that the man who says it can't be done is generally interrupted by someone doing it."

"Real courage is when you know you're licked before you begin, but you begin anyway and see it through no matter what."

"Seeing the light at the end of the tunnel is not enough; you must get moving toward it."

"Think not of yourself as the architect of your career but as the sculptor. Expect to have to do a lot of hard hammering and chiseling and scraping and polishing."

"Stand up to your obstacles and do something about them. You will find that they haven't half the strength you think they have."

"It's always too early to quit."

"Every problem has in it the seeds of its own solution. If you don’t have any problems, you don’t get any seeds."

"The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore, all progress depends on the unreasonable man."

"So we beat on, boats against the current, borne back ceaselessly into the past."