Who said "I don't ask others to do what I won't do myself."?

This quote is attributed to Captain America (Age of Ultron).

I don't ask others to do what I won't do myself. - Captain America (Age of Ultron)

"I don't ask others to do what I won't do myself."

Captain America (Age of Ultron) Leadership

"I'm always angry."

"The world is in our hands now."

"We may not be able to save everyone, but we have to try."

"I can do this all day."

"A leader must be fair and just."

"Integrity is everything."

"One must take responsibility for one's environment."

"In this house, I make the decisions"