Who said "Courage is doing what must be done, regardless of cost."?

This quote is attributed to Ilsa Lund.

Courage is doing what must be done, regardless of cost. - Ilsa Lund

"Courage is doing what must be done, regardless of cost."

Ilsa Lund Courage

"We'll always have Paris, Rick. No matter what happens to us."

"I came here for you. Everything I've done has been for this moment."

"Life is uncertain. We must cherish the moments we have."

"Sometimes the greatest love is knowing when to let someone go."

"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."