Who said "Fear is the ash that remains when courage is consumed."?

This quote is attributed to Drogon.

Fear is the ash that remains when courage is consumed. - Drogon

"Fear is the ash that remains when courage is consumed."

Drogon Courage

"I am fire. I am death."

"Dracarys."

"A dragon is not a slave."

"I will burn them all."

"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."