Who said "Strength is not measured in muscles, but in character."?

This quote is attributed to Martial.

Strength is not measured in muscles, but in character. - Martial

"Strength is not measured in muscles, but in character."

Martial Strength

Poet Ancient Rome 40–103

"A man is not where he lives, but where he loves."

"Life is not measured by the number of breaths you take, but by the moments that take your breath away."

"Do not seek to be admired by everyone; seek to be respected by those who matter."

"Happiness is the highest good."

"Strength comes from within."

"A woman should be proud of who she is."

"A strong woman can overcome anything."

"The only thing I'm good at is killing."