Who said "We've got to do something!"?

This quote is attributed to Hermione Granger.

We've got to do something! - Hermione Granger

"We've got to do something!"

Hermione Granger

"I do hope you're planning to die, Harry, because if not, you're heading straight for a Muggle hospital."

"It's not who you are underneath, but what you do that defines you."

"Fear of a name only increases fear of the thing itself."

"Books are a uniquely portable magic."