I've learned that gratitude is as important as courage. - Captain America (Age of Ultron)

"I've learned that gratitude is as important as courage."

Captain America (Age of Ultron) Gratitude

More from Captain America (Age of Ultron)

"I'm always angry."

"The world is in our hands now."

"We may not be able to save everyone, but we have to try."

"I can do this all day."

"Gratitude makes life richer."

"A grateful heart is a happy heart."

"Respect those who came before us."

"Life's greatest treasures are the people we love"