I believe that man will not merely endure; he will prevail.
John D. Rockefeller
I do not think there is any other quality so essential to success of any kind as the quality of perseverance. It overcomes almost everything, even nature.
I had to pick myself up and get on with it, do it all over again, only even better this time.
I have not failed. I've just found 10,000 ways that won't work.
I learned that the only way you are going to get anywhere in life is to work hard at it. Whether you're a musician, a writer, an athlete or a businessman, there is no getting around it. If you do, you'll win - if you don't you won't.
Henry Wadsworth Longfellow
If you only knock long enough and loud enough at the gate, you are sure to wake up somebody.
If you should put even a little on a little and should do this often, soon this would become big.
Norman Vincent Peale
If you want to get somewhere you have to know where you want to go and how to get there. Then never, never, never give up.
If your determination is fixed, I do not counsel you to despair. Few things are impossible to diligence and skill. Great works are performed not by strength, but perseverance.