Who said "The right thing is often the hardest thing."?

This quote is attributed to Hermione Granger.

The right thing is often the hardest thing. - Hermione Granger

"The right thing is often the hardest thing."

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."