Who said "I've never backed down from a challenge, and I never will."?

This quote is attributed to William Riker.

I've never backed down from a challenge, and I never will. - William Riker

"I've never backed down from a challenge, and I never will."

William Riker Perseverance

"Make it so."

"I'm a man of action. Words come later."

"You can't spend your whole life waiting for things to happen."

"The line between improvisation and disaster is a very fine one."

"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."