Who said "Fear is the doorway to understanding."?

This quote is attributed to Thomas.

Fear is the doorway to understanding. - Thomas

"Fear is the doorway to understanding."

Thomas Courage

Character in The Maze Runner

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"Survive first. Figure out the rest later."

"We're not going to die. Not here, not now."

"The Maze is the key to everything."

"Fear is a choice."

"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."