"excellence is not a singular act, but a habit. You are what you repeatedly do." -Shaquille O'Neal

"Endurance is one of the most difficult disciplines, but it is to the one who endures that the final victory comes" -Buddha

"A fight is not won by one punch or kick. Either learn to endure or hire a bodyguard." -Bruce Lee

"Perseverance is the hard work you do after you get tired of doing the hard work you already did" -Newt Gingrich

"Much good work is lost for the lack of a little more" -Edward H. Harriman

"The person who is waiting for something to turn up might start with their shirtsleeves." -Garth Henrichs

all of these are from the jan/feb 2009 issue of Men's health