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.
"People say nothing is impossible but I do nothing every day."
"You're a better man than you think you are."
"We can't take any credit for our talents; it's how we use them that counts."
"You must learn to sacrifice for a higher purpose; to push yourself beyond all limitation."
"Sometimes people need to step outside of who they are to realize who they could really be."
"Each one of us is greater than the worst thing we've ever done."
"You have the power. It is in you."
"One cannot deny what one is meant to be."
"A man's station is limited only by his imagination."
"Even if you're different, you can still do great things."