Who said "Courage is not the absence of fear, but action despite it"?

This quote is attributed to Genly Ai.

Courage is not the absence of fear, but action despite it - Genly Ai

"Courage is not the absence of fear, but action despite it"

Genly Ai Courage

Character in The Left Hand of Darkness

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"A frozen world is nothing to a man who knows the heat."

"How could you trust something that could become the opposite sex at any moment?"

"I do not know how to explain to you the extreme sense of isolation I feel."

"I had been afraid of the wrong thing, all along."

"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."