Who said "Courage isn't the absence of fear—it's acting despite it."?

This quote is attributed to The Flash (DCEU).

Courage isn't the absence of fear—it's acting despite it. - The Flash (DCEU)

"Courage isn't the absence of fear—it's acting despite it."

The Flash (DCEU) Courage

"I'm fast. Really fast."

"Time moves differently when you're moving at super speed."

"You gotta embrace what makes you different."

"Running away isn't always the answer, even when you're fast enough to do it."

"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."