Who said "A man who admits fear has already lost."?

This quote is attributed to Lannister.

A man who admits fear has already lost. - Lannister

"A man who admits fear has already lost."

Lannister Courage

"A Lannister always pays his debts."

"I am the god of tits and wine."

"You are an awful man."

"I drink and I know things."

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

"Sometimes you have to be the monster to stop the monsters."