Who said "Hope is the last weapon we should ever lay down."?

This quote is attributed to Lady Sif.

Hope is the last weapon we should ever lay down. - Lady Sif

"Hope is the last weapon we should ever lay down."

Lady Sif Hope

"I am a warrior of Asgard, and I will not falter in the face of darkness."

"Strength is not measured by the power of one's blade, but by the resolve of one's heart."

"A true friend stands beside you, not behind you."

"We are forged in battle, but refined through compassion."

"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."