Who said "A man who questions his own power is fit to wield it."?

This quote is attributed to Hadrian.

A man who questions his own power is fit to wield it. - Hadrian

"A man who questions his own power is fit to wield it."

Hadrian Wisdom

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."

"I'm not angry, I'm just disappointed."

"The best things in life are free."

"You can't have everything in life, but you can have what matters most."

"A woman's intuition is rarely wrong."