Who said "Lead by example. That's the only leadership that matters."?

This quote is attributed to X-Men Wolverine.

Lead by example. That's the only leadership that matters. - X-Men Wolverine

"Lead by example. That's the only leadership that matters."

X-Men Wolverine Leadership

"I'm the best there is at what I do, but what I do isn't very nice."

"Sometimes it snows in April."

"A man who can't stand to be alone is not a man."

"I've lived a long time, kid. Long enough to know you can't change the past."

"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"