Who said "A leader must be willing to stand alone if necessary."?

This quote is attributed to Thor (The Avengers).

A leader must be willing to stand alone if necessary. - Thor (The Avengers)

"A leader must be willing to stand alone if necessary."

Thor (The Avengers) Leadership

"I am Thor, god of thunder!"

"You lack the strength to wield such power."

"I have nothing but respect for you, and your work."

"There are no men like me."

"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"