Who said "The only thing we have to fear is fear itself."?

This quote is attributed to Remus Lupin.

The only thing we have to fear is fear itself. - Remus Lupin

"The only thing we have to fear is fear itself."

Remus Lupin Courage

Character in Harry Potter and the Prisoner of Azkaban

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"Dementors are among the foulest creatures that walk this earth."

"You're a true wizard, Harry."

"Understanding is the first step to acceptance."

"It is important to ask for help when you need 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."