Who said "We are all capable of more than we know."?

This quote is attributed to Hulk.

We are all capable of more than we know. - Hulk

"We are all capable of more than we know."

Hulk Inspiration

"Hulk is strongest one there is."

"Don't make me angry. You wouldn't like me when I'm angry."

"Puny god."

"Hulk smash!"

"The best part of living is knowing you survived."

"The world needs heroes."

"Life is too short to live poorly."

"I'd rather be an optimist and be wrong than a pessimist and be right"