Who said "Courage is not the absence of fear, but endurance."?

This quote is attributed to Mary Shelley.

Courage is not the absence of fear, but endurance. - Mary Shelley

"Courage is not the absence of fear, but endurance."

Mary Shelley Courage

Novelist English 1797–1851

"Nothing is so painful to the human mind as a great and sudden change."

"Beware; for I am fearless, and therefore powerful."

"Life and death appeared to me ideal bounds, which I should first break through."

"I have crossed oceans of time to find you."

"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."