Who said "The only defeat is the failure to keep trying."?

This quote is attributed to Hadrian.

The only defeat is the failure to keep trying. - Hadrian

"The only defeat is the failure to keep trying."

Hadrian Perseverance

Emperor Ancient Rome 76–138

"Nothing is harder to bear than a good example."

"I have always strived to be the best, but I have also learned that the best is not always perfection."

"A man who fears nothing is more dangerous than a man who fears something."

"The greatest luxury is knowledge."

"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."