Who said "Philosophy teaches us to question what we think we know."?

This quote is attributed to Lady Sif.

Philosophy teaches us to question what we think we know. - Lady Sif

"Philosophy teaches us to question what we think we know."

Lady Sif Philosophy

"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."

"I've seen the worst humanity has to offer."

"Sometimes I wonder if the world is worth saving."

"Every choice shapes our destiny."

"Order is the foundation of a good life."