Who said "It's going to be hard, but hard does not mean impossible."?

This quote is attributed to William Halsey.

It's going to be hard, but hard does not mean impossible. - William Halsey

"It's going to be hard, but hard does not mean impossible."

William Halsey Perseverance

Military Admiral American 1882–1959

"Hit hard, hit fast, hit often."

"There are no great men, only great challenges that ordinary men are forced by circumstance to meet."

"The only thing worse than a battle lost is a battle won."

"Damn the torpedoes, full speed ahead!"

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."