Who said "A leader must be willing to do the hard thing."?

This quote is attributed to The Hound.

A leader must be willing to do the hard thing. - The Hound

"A leader must be willing to do the hard thing."

The Hound Leadership

"The things we love destroy us every time."

"There's no shame in fear, only in how you face it."

"A man's got to know what he's good at. I'm good at killing things."

"The world doesn't care what you want or need. It takes what it wants."

"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"