“Perseverance is the most overrated of traits, if it is unaccompanied by talent; beating your head against a wall is more likely to produce a concussion in the head than a hole in the wall.”

“Be proactive. Begin with the end in mind.”

“You do not rise to the level of your goals. You fall to the level of your systems.”

“I learned that courage was not the absence of fear, but the triumph over it. The brave man is not he who does not feel afraid, but he who conquers that fear.”

“If you don't like something, change it. If you can't change it, change your attitude.”