“Only if you reach the boundary will the boundary recede before you. And if you don't, if you confine your efforts, the boundary will shrink to accommodate itself to your efforts. And you can only expand your capacities by working to the very limit.”

“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.”