Your potential is the possible you. Very few of us focus our energy enough to discover the outer edge of our capabilities. You are much more than you know yourself to be.
Here are a variety of movie quotes about human potential.
"We never lose our demons, Mordo. We only learn to live above them."
"Accepting whatever comes my way, good bad, it doesn't matter. What matters is just getting in that groove."
"To find that what you seek, all you must do is look deep."
"A gift can often be a curse. Give someone wings and they may fly too close to the sun."
"You should find your one thing and be better at it."
"Real talent always flourishes, but then there's that type that always promises more than it delivers."
"A man competes to prove something to himself."
"All the answers will be found within."
"Your real strength comes from being the best you you can be. So who are you?"
"If you only do what you can do, you will only be who you are now."