Who said "I've learned that hope is the most powerful weapon."?

This quote is attributed to Fox Mulder.

I've learned that hope is the most powerful weapon. - Fox Mulder

"I've learned that hope is the most powerful weapon."

Fox Mulder Hope

"The truth is out there."

"I want to believe."

"Trust no one."

"The answers are in the questions we're afraid to ask."

"Every day is a new opportunity."

"Hope is what gets us through difficult times."

"I'm not your enemy, kid. I'm trying to save you."

"Redemption is a long road."