Who said "I think courage is a muscle that grows stronger with use."?

This quote is attributed to Oscar Isaac.

I think courage is a muscle that grows stronger with use. - Oscar Isaac

"I think courage is a muscle that grows stronger with use."

Oscar Isaac Courage

Actor Guatemalan-American Born 1979 (age 47)

"The more you know, the more you realize you don't know anything."

"Life is what happens when you're busy making other plans."

"The only way to do great work is to love what you do."

"In the end, we will remember not the words of our enemies, but the silence of our friends."

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

"Sometimes you have to be the monster to stop the monsters."