Who said "To speak truth, even when it costs you, is the mark of honor."?

This quote is attributed to Thor (Age of Ultron).

To speak truth, even when it costs you, is the mark of honor... - Thor (Age of Ultron)

"To speak truth, even when it costs you, is the mark of honor."

Thor (Age of Ultron) Truth

"I am mighty, but I am not all-powerful. This is a lesson I continue to learn."

"A warrior's strength comes not just from muscles, but from the heart that drives them."

"We are stronger together than we could ever be apart."

"The best of us must sometimes make the hardest choices."

"Lucy, you got some 'splainin' to do!"

"You must always be honest with the people you love."

"Truth always comes out in the end."

"Honesty is always the best policy."