Who said "I've learned that failure is just a stepping stone."?

This quote is attributed to John Watson.

I've learned that failure is just a stepping stone. - John Watson

"I've learned that failure is just a stepping stone."

John Watson Perseverance

"I'm a doctor, not a magician."

"You know what? I don't actually care what you think."

"Afghanistan or Iraq?"

"How did you know about the bullet wound?"

"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."